21385075

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 27753680

約数和(自身を除く): 6368605

約数列:

[1, 5, 25, 37, 61, 185, 305, 379, 925, 1525, 1895, 2257, 9475, 11285, 14023, 23119, 56425, 70115, 115595, 350575, 577975, 855403, 4277015, 21385075]

約数ペア:

[(1, 21385075), (5, 4277015), (25, 855403), (37, 577975), (61, 350575), (185, 115595), (305, 70115), (379, 56425), (925, 23119), (1525, 14023), (1895, 11285), (2257, 9475)]