40156180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28279}}^1$

素因数の和:28359

約数の個数: 24

約数和(自身を含む): 85518720

約数和(自身を除く): 45362540

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28279, 56558, 113116, 141395, 282790, 565580, 2007809, 4015618, 8031236, 10039045, 20078090, 40156180]

約数ペア:

[(1, 40156180), (2, 20078090), (4, 10039045), (5, 8031236), (10, 4015618), (20, 2007809), (71, 565580), (142, 282790), (284, 141395), (355, 113116), (710, 56558), (1420, 28279)]