28529375

素因数分解:

$5^4\times 7^1\times {\mathrm{6521}}^1$

素因数の和:6548

約数の個数: 20

約数和(自身を含む): 40749456

約数和(自身を除く): 12220081

約数列:

[1, 5, 7, 25, 35, 125, 175, 625, 875, 4375, 6521, 32605, 45647, 163025, 228235, 815125, 1141175, 4075625, 5705875, 28529375]

約数ペア:

[(1, 28529375), (5, 5705875), (7, 4075625), (25, 1141175), (35, 815125), (125, 228235), (175, 163025), (625, 45647), (875, 32605), (4375, 6521)]