20213540

素因数分解:

$2^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{3229}}^1$

素因数の和:3551

約数の個数: 24

約数和(自身を含む): 42597240

約数和(自身を除く): 22383700

約数列:

[1, 2, 4, 5, 10, 20, 313, 626, 1252, 1565, 3130, 3229, 6260, 6458, 12916, 16145, 32290, 64580, 1010677, 2021354, 4042708, 5053385, 10106770, 20213540]

約数ペア:

[(1, 20213540), (2, 10106770), (4, 5053385), (5, 4042708), (10, 2021354), (20, 1010677), (313, 64580), (626, 32290), (1252, 16145), (1565, 12916), (3130, 6458), (3229, 6260)]