21912475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{353}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 29498112

約数和(自身を除く): 7585637

約数列:

[1, 5, 13, 25, 65, 191, 325, 353, 955, 1765, 2483, 4589, 4775, 8825, 12415, 22945, 62075, 67423, 114725, 337115, 876499, 1685575, 4382495, 21912475]

約数ペア:

[(1, 21912475), (5, 4382495), (13, 1685575), (25, 876499), (65, 337115), (191, 114725), (325, 67423), (353, 62075), (955, 22945), (1765, 12415), (2483, 8825), (4589, 4775)]