19125625

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:522

約数の個数: 20

約数和(自身を含む): 24292224

約数和(自身を除く): 5166599

約数列:

[1, 5, 25, 71, 125, 355, 431, 625, 1775, 2155, 8875, 10775, 30601, 44375, 53875, 153005, 269375, 765025, 3825125, 19125625]

約数ペア:

[(1, 19125625), (5, 3825125), (25, 765025), (71, 269375), (125, 153005), (355, 53875), (431, 44375), (625, 30601), (1775, 10775), (2155, 8875)]