20918860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36067}}^1$

素因数の和:36105

約数の個数: 24

約数和(自身を含む): 45445680

約数和(自身を除く): 24526820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36067, 72134, 144268, 180335, 360670, 721340, 1045943, 2091886, 4183772, 5229715, 10459430, 20918860]

約数ペア:

[(1, 20918860), (2, 10459430), (4, 5229715), (5, 4183772), (10, 2091886), (20, 1045943), (29, 721340), (58, 360670), (116, 180335), (145, 144268), (290, 72134), (580, 36067)]