161264140

素因数分解:

$2^2\times 5^1\times {\mathrm{1451}}^1\times {\mathrm{5557}}^1$

素因数の和:7017

約数の個数: 24

約数和(自身を含む): 338949072

約数和(自身を除く): 177684932

約数列:

[1, 2, 4, 5, 10, 20, 1451, 2902, 5557, 5804, 7255, 11114, 14510, 22228, 27785, 29020, 55570, 111140, 8063207, 16126414, 32252828, 40316035, 80632070, 161264140]

約数ペア:

[(1, 161264140), (2, 80632070), (4, 40316035), (5, 32252828), (10, 16126414), (20, 8063207), (1451, 111140), (2902, 55570), (5557, 29020), (5804, 27785), (7255, 22228), (11114, 14510)]