21426125

素因数分解:

$5^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:590

約数の個数: 32

約数和(自身を含む): 31269888

約数和(自身を除く): 9843763

約数列:

[1, 5, 7, 25, 35, 47, 125, 175, 235, 329, 521, 875, 1175, 1645, 2605, 3647, 5875, 8225, 13025, 18235, 24487, 41125, 65125, 91175, 122435, 171409, 455875, 612175, 857045, 3060875, 4285225, 21426125]

約数ペア:

[(1, 21426125), (5, 4285225), (7, 3060875), (25, 857045), (35, 612175), (47, 455875), (125, 171409), (175, 122435), (235, 91175), (329, 65125), (521, 41125), (875, 24487), (1175, 18235), (1645, 13025), (2605, 8225), (3647, 5875)]