20558390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{70891}}^1$

素因数の和:70927

約数の個数: 16

約数和(自身を含む): 38281680

約数和(自身を除く): 17723290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 70891, 141782, 354455, 708910, 2055839, 4111678, 10279195, 20558390]

約数ペア:

[(1, 20558390), (2, 10279195), (5, 4111678), (10, 2055839), (29, 708910), (58, 354455), (145, 141782), (290, 70891)]