21067250

素因数分解:

$2^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{4957}}^1$

素因数の和:4991

約数の個数: 32

約数和(自身を含む): 41766192

約数和(自身を除く): 20698942

約数列:

[1, 2, 5, 10, 17, 25, 34, 50, 85, 125, 170, 250, 425, 850, 2125, 4250, 4957, 9914, 24785, 49570, 84269, 123925, 168538, 247850, 421345, 619625, 842690, 1239250, 2106725, 4213450, 10533625, 21067250]

約数ペア:

[(1, 21067250), (2, 10533625), (5, 4213450), (10, 2106725), (17, 1239250), (25, 842690), (34, 619625), (50, 421345), (85, 247850), (125, 168538), (170, 123925), (250, 84269), (425, 49570), (850, 24785), (2125, 9914), (4250, 4957)]