21461525

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{113}}^1$

素因数の和:301

約数の個数: 24

約数和(自身を含む): 27480384

約数和(自身を除く): 6018859

約数列:

[1, 5, 25, 71, 107, 113, 355, 535, 565, 1775, 2675, 2825, 7597, 8023, 12091, 37985, 40115, 60455, 189925, 200575, 302275, 858461, 4292305, 21461525]

約数ペア:

[(1, 21461525), (5, 4292305), (25, 858461), (71, 302275), (107, 200575), (113, 189925), (355, 60455), (535, 40115), (565, 37985), (1775, 12091), (2675, 8023), (2825, 7597)]