20904530

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{29443}}^1$

素因数の和:29521

約数の個数: 16

約数和(自身を含む): 38159424

約数和(自身を除く): 17254894

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 29443, 58886, 147215, 294430, 2090453, 4180906, 10452265, 20904530]

約数ペア:

[(1, 20904530), (2, 10452265), (5, 4180906), (10, 2090453), (71, 294430), (142, 147215), (355, 58886), (710, 29443)]