16638980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{10531}}^1$

素因数の和:10619

約数の個数: 24

約数和(自身を含む): 35387520

約数和(自身を除く): 18748540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 10531, 21062, 42124, 52655, 105310, 210620, 831949, 1663898, 3327796, 4159745, 8319490, 16638980]

約数ペア:

[(1, 16638980), (2, 8319490), (4, 4159745), (5, 3327796), (10, 1663898), (20, 831949), (79, 210620), (158, 105310), (316, 52655), (395, 42124), (790, 21062), (1580, 10531)]