19218980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87359}}^1$

素因数の和:87379

約数の個数: 24

約数和(自身を含む): 44029440

約数和(自身を除く): 24810460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87359, 174718, 349436, 436795, 873590, 960949, 1747180, 1921898, 3843796, 4804745, 9609490, 19218980]

約数ペア:

[(1, 19218980), (2, 9609490), (4, 4804745), (5, 3843796), (10, 1921898), (11, 1747180), (20, 960949), (22, 873590), (44, 436795), (55, 349436), (110, 174718), (220, 87359)]