3949375

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 20

約数和(自身を含む): 5060880

約数和(自身を除く): 1111505

約数列:

[1, 5, 25, 71, 89, 125, 355, 445, 625, 1775, 2225, 6319, 8875, 11125, 31595, 44375, 55625, 157975, 789875, 3949375]

約数ペア:

[(1, 3949375), (5, 789875), (25, 157975), (71, 55625), (89, 44375), (125, 31595), (355, 11125), (445, 8875), (625, 6319), (1775, 2225)]