20979580

素因数分解:

$2^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9283}}^1$

素因数の和:9405

約数の個数: 24

約数和(自身を含む): 44451792

約数和(自身を除く): 23472212

約数列:

[1, 2, 4, 5, 10, 20, 113, 226, 452, 565, 1130, 2260, 9283, 18566, 37132, 46415, 92830, 185660, 1048979, 2097958, 4195916, 5244895, 10489790, 20979580]

約数ペア:

[(1, 20979580), (2, 10489790), (4, 5244895), (5, 4195916), (10, 2097958), (20, 1048979), (113, 185660), (226, 92830), (452, 46415), (565, 37132), (1130, 18566), (2260, 9283)]