20430220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{7349}}^1$

素因数の和:7497

約数の個数: 24

約数和(自身を含む): 43218000

約数和(自身を除く): 22787780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 7349, 14698, 29396, 36745, 73490, 146980, 1021511, 2043022, 4086044, 5107555, 10215110, 20430220]

約数ペア:

[(1, 20430220), (2, 10215110), (4, 5107555), (5, 4086044), (10, 2043022), (20, 1021511), (139, 146980), (278, 73490), (556, 36745), (695, 29396), (1390, 14698), (2780, 7349)]