21610625

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{487}}^1$

素因数の和:578

約数の個数: 20

約数和(自身を含む): 27441216

約数和(自身を除く): 5830591

約数列:

[1, 5, 25, 71, 125, 355, 487, 625, 1775, 2435, 8875, 12175, 34577, 44375, 60875, 172885, 304375, 864425, 4322125, 21610625]

約数ペア:

[(1, 21610625), (5, 4322125), (25, 864425), (71, 304375), (125, 172885), (355, 60875), (487, 44375), (625, 34577), (1775, 12175), (2435, 8875)]