40681580

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28649}}^1$

素因数の和:28729

約数の個数: 24

約数和(自身を含む): 86637600

約数和(自身を除く): 45956020

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 28649, 57298, 114596, 143245, 286490, 572980, 2034079, 4068158, 8136316, 10170395, 20340790, 40681580]

約数ペア:

[(1, 40681580), (2, 20340790), (4, 10170395), (5, 8136316), (10, 4068158), (20, 2034079), (71, 572980), (142, 286490), (284, 143245), (355, 114596), (710, 57298), (1420, 28649)]