21301655

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{163}}^1\times {\mathrm{443}}^1$

素因数の和:670

約数の個数: 16

約数和(自身を含む): 26213760

約数和(自身を除く): 4912105

約数列:

[1, 5, 59, 163, 295, 443, 815, 2215, 9617, 26137, 48085, 72209, 130685, 361045, 4260331, 21301655]

約数ペア:

[(1, 21301655), (5, 4260331), (59, 361045), (163, 130685), (295, 72209), (443, 48085), (815, 26137), (2215, 9617)]