20621365

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{1657}}^1$

素因数の和:1812

約数の個数: 16

約数和(自身を含む): 26262720

約数和(自身を除く): 5641355

約数列:

[1, 5, 19, 95, 131, 655, 1657, 2489, 8285, 12445, 31483, 157415, 217067, 1085335, 4124273, 20621365]

約数ペア:

[(1, 20621365), (5, 4124273), (19, 1085335), (95, 217067), (131, 157415), (655, 31483), (1657, 12445), (2489, 8285)]