20592980

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1039}}^1$

素因数の和:2039

約数の個数: 24

約数和(自身を含む): 43330560

約数和(自身を除く): 22737580

約数列:

[1, 2, 4, 5, 10, 20, 991, 1039, 1982, 2078, 3964, 4156, 4955, 5195, 9910, 10390, 19820, 20780, 1029649, 2059298, 4118596, 5148245, 10296490, 20592980]

約数ペア:

[(1, 20592980), (2, 10296490), (4, 5148245), (5, 4118596), (10, 2059298), (20, 1029649), (991, 20780), (1039, 19820), (1982, 10390), (2078, 9910), (3964, 5195), (4156, 4955)]