20430140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{10531}}^1$

素因数の和:10637

約数の個数: 24

約数和(自身を含む): 43349712

約数和(自身を除く): 22919572

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 10531, 21062, 42124, 52655, 105310, 210620, 1021507, 2043014, 4086028, 5107535, 10215070, 20430140]

約数ペア:

[(1, 20430140), (2, 10215070), (4, 5107535), (5, 4086028), (10, 2043014), (20, 1021507), (97, 210620), (194, 105310), (388, 52655), (485, 42124), (970, 21062), (1940, 10531)]