20791180

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1049}}^1$

素因数の和:2049

約数の個数: 24

約数和(自身を含む): 43747200

約数和(自身を除く): 22956020

約数列:

[1, 2, 4, 5, 10, 20, 991, 1049, 1982, 2098, 3964, 4196, 4955, 5245, 9910, 10490, 19820, 20980, 1039559, 2079118, 4158236, 5197795, 10395590, 20791180]

約数ペア:

[(1, 20791180), (2, 10395590), (4, 5197795), (5, 4158236), (10, 2079118), (20, 1039559), (991, 20980), (1049, 19820), (1982, 10490), (2098, 9910), (3964, 5245), (4196, 4955)]