21529320625

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47123}}^1$

素因数の和:47203

約数の個数: 40

約数和(自身を含む): 29148644448

約数和(自身を除く): 7619323823

約数列:

[1, 5, 17, 25, 43, 85, 125, 215, 425, 625, 731, 1075, 2125, 3655, 5375, 10625, 18275, 26875, 47123, 91375, 235615, 456875, 801091, 1178075, 2026289, 4005455, 5890375, 10131445, 20027275, 29451875, 34446913, 50657225, 100136375, 172234565, 253286125, 500681875, 861172825, 1266430625, 4305864125, 21529320625]

約数ペア:

[(1, 21529320625), (5, 4305864125), (17, 1266430625), (25, 861172825), (43, 500681875), (85, 253286125), (125, 172234565), (215, 100136375), (425, 50657225), (625, 34446913), (731, 29451875), (1075, 20027275), (2125, 10131445), (3655, 5890375), (5375, 4005455), (10625, 2026289), (18275, 1178075), (26875, 801091), (47123, 456875), (91375, 235615)]