20907290

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19181}}^1$

素因数の和:19297

約数の個数: 16

約数和(自身を含む): 37980360

約数和(自身を除く): 17073070

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19181, 38362, 95905, 191810, 2090729, 4181458, 10453645, 20907290]

約数ペア:

[(1, 20907290), (2, 10453645), (5, 4181458), (10, 2090729), (109, 191810), (218, 95905), (545, 38362), (1090, 19181)]