128961980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{921157}}^1$

素因数の和:921173

約数の個数: 24

約数和(自身を含む): 309509088

約数和(自身を除く): 180547108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 921157, 1842314, 3684628, 4605785, 6448099, 9211570, 12896198, 18423140, 25792396, 32240495, 64480990, 128961980]

約数ペア:

[(1, 128961980), (2, 64480990), (4, 32240495), (5, 25792396), (7, 18423140), (10, 12896198), (14, 9211570), (20, 6448099), (28, 4605785), (35, 3684628), (70, 1842314), (140, 921157)]