72590020

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84407}}^1$

素因数の和:84459

約数の個数: 24

約数和(自身を含む): 155985984

約数和(自身を除く): 83395964

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 84407, 168814, 337628, 422035, 844070, 1688140, 3629501, 7259002, 14518004, 18147505, 36295010, 72590020]

約数ペア:

[(1, 72590020), (2, 36295010), (4, 18147505), (5, 14518004), (10, 7259002), (20, 3629501), (43, 1688140), (86, 844070), (172, 422035), (215, 337628), (430, 168814), (860, 84407)]