19977625

素因数分解:

$5^3\times {\mathrm{71}}^1\times {\mathrm{2251}}^1$

素因数の和:2337

約数の個数: 16

約数和(自身を含む): 25294464

約数和(自身を除く): 5316839

約数列:

[1, 5, 25, 71, 125, 355, 1775, 2251, 8875, 11255, 56275, 159821, 281375, 799105, 3995525, 19977625]

約数ペア:

[(1, 19977625), (5, 3995525), (25, 799105), (71, 281375), (125, 159821), (355, 56275), (1775, 11255), (2251, 8875)]