18661960

素因数分解:

$2^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{1231}}^1$

素因数の和:1621

約数の個数: 32

約数和(自身を含む): 42134400

約数和(自身を除く): 23472440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 379, 758, 1231, 1516, 1895, 2462, 3032, 3790, 4924, 6155, 7580, 9848, 12310, 15160, 24620, 49240, 466549, 933098, 1866196, 2332745, 3732392, 4665490, 9330980, 18661960]

約数ペア:

[(1, 18661960), (2, 9330980), (4, 4665490), (5, 3732392), (8, 2332745), (10, 1866196), (20, 933098), (40, 466549), (379, 49240), (758, 24620), (1231, 15160), (1516, 12310), (1895, 9848), (2462, 7580), (3032, 6155), (3790, 4924)]