21003670

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{123551}}^1$

素因数の和:123575

約数の個数: 16

約数和(自身を含む): 40030848

約数和(自身を除く): 19027178

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 123551, 247102, 617755, 1235510, 2100367, 4200734, 10501835, 21003670]

約数ペア:

[(1, 21003670), (2, 10501835), (5, 4200734), (10, 2100367), (17, 1235510), (34, 617755), (85, 247102), (170, 123551)]