72510040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42157}}^1$

素因数の和:42211

約数の個数: 32

約数和(自身を含む): 166945680

約数和(自身を除く): 94435640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42157, 84314, 168628, 210785, 337256, 421570, 843140, 1686280, 1812751, 3625502, 7251004, 9063755, 14502008, 18127510, 36255020, 72510040]

約数ペア:

[(1, 72510040), (2, 36255020), (4, 18127510), (5, 14502008), (8, 9063755), (10, 7251004), (20, 3625502), (40, 1812751), (43, 1686280), (86, 843140), (172, 421570), (215, 337256), (344, 210785), (430, 168628), (860, 84314), (1720, 42157)]