20904655

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1117}}^1$

素因数の和:1338

約数の個数: 16

約数和(自身を含む): 26563680

約数和(自身を除く): 5659025

約数列:

[1, 5, 19, 95, 197, 985, 1117, 3743, 5585, 18715, 21223, 106115, 220049, 1100245, 4180931, 20904655]

約数ペア:

[(1, 20904655), (5, 4180931), (19, 1100245), (95, 220049), (197, 106115), (985, 21223), (1117, 18715), (3743, 5585)]