21504125

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2423}}^1$

素因数の和:2509

約数の個数: 16

約数和(自身を含む): 27226368

約数和(自身を除く): 5722243

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2423, 8875, 12115, 60575, 172033, 302875, 860165, 4300825, 21504125]

約数ペア:

[(1, 21504125), (5, 4300825), (25, 860165), (71, 302875), (125, 172033), (355, 60575), (1775, 12115), (2423, 8875)]