20906390

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72091}}^1$

素因数の和:72127

約数の個数: 16

約数和(自身を含む): 38929680

約数和(自身を除く): 18023290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72091, 144182, 360455, 720910, 2090639, 4181278, 10453195, 20906390]

約数ペア:

[(1, 20906390), (2, 10453195), (5, 4181278), (10, 2090639), (29, 720910), (58, 360455), (145, 144182), (290, 72091)]