21072010

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123953}}^1$

素因数の和:123977

約数の個数: 16

約数和(自身を含む): 40161096

約数和(自身を除く): 19089086

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123953, 247906, 619765, 1239530, 2107201, 4214402, 10536005, 21072010]

約数ペア:

[(1, 21072010), (2, 10536005), (5, 4214402), (10, 2107201), (17, 1239530), (34, 619765), (85, 247906), (170, 123953)]