20512073380

素因数分解:

$2^2\times 5^1\times {\mathrm{22571}}^1\times {\mathrm{45439}}^1$

素因数の和:68019

約数の個数: 24

約数和(自身を含む): 43078210560

約数和(自身を除く): 22566137180

約数列:

[1, 2, 4, 5, 10, 20, 22571, 45142, 45439, 90284, 90878, 112855, 181756, 225710, 227195, 451420, 454390, 908780, 1025603669, 2051207338, 4102414676, 5128018345, 10256036690, 20512073380]

約数ペア:

[(1, 20512073380), (2, 10256036690), (4, 5128018345), (5, 4102414676), (10, 2051207338), (20, 1025603669), (22571, 908780), (45142, 454390), (45439, 451420), (90284, 227195), (90878, 225710), (112855, 181756)]