311557660

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{39239}}^1$

素因数の和:39645

約数の個数: 24

約数和(自身を含む): 655935840

約数和(自身を除く): 344378180

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 39239, 78478, 156956, 196195, 392390, 784780, 15577883, 31155766, 62311532, 77889415, 155778830, 311557660]

約数ペア:

[(1, 311557660), (2, 155778830), (4, 77889415), (5, 62311532), (10, 31155766), (20, 15577883), (397, 784780), (794, 392390), (1588, 196195), (1985, 156956), (3970, 78478), (7940, 39239)]