19509820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{88681}}^1$

素因数の和:88701

約数の個数: 24

約数和(自身を含む): 44695728

約数和(自身を除く): 25185908

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 88681, 177362, 354724, 443405, 886810, 975491, 1773620, 1950982, 3901964, 4877455, 9754910, 19509820]

約数ペア:

[(1, 19509820), (2, 9754910), (4, 4877455), (5, 3901964), (10, 1950982), (11, 1773620), (20, 975491), (22, 886810), (44, 443405), (55, 354724), (110, 177362), (220, 88681)]