What is an aliquot part of a number or quantity is one which will divide it without a remainder; thus, 5 is an aliquot part of 15. Opposed to aliquant called?

aliquot — An aliquot part of a number or quantity is one which will divide it without a remainder; thus, 5 is an aliquot part of 15. Opposed to aliquant. (Webster's 1913.)

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