20500540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14437}}^1$

素因数の和:14517

約数の個数: 24

約数和(自身を含む): 43660512

約数和(自身を除く): 23159972

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14437, 28874, 57748, 72185, 144370, 288740, 1025027, 2050054, 4100108, 5125135, 10250270, 20500540]

約数ペア:

[(1, 20500540), (2, 10250270), (4, 5125135), (5, 4100108), (10, 2050054), (20, 1025027), (71, 288740), (142, 144370), (284, 72185), (355, 57748), (710, 28874), (1420, 14437)]