20456875

素因数分解:

$5^4\times {\mathrm{71}}^1\times {\mathrm{461}}^1$

素因数の和:552

約数の個数: 20

約数和(自身を含む): 25979184

約数和(自身を除く): 5522309

約数列:

[1, 5, 25, 71, 125, 355, 461, 625, 1775, 2305, 8875, 11525, 32731, 44375, 57625, 163655, 288125, 818275, 4091375, 20456875]

約数ペア:

[(1, 20456875), (5, 4091375), (25, 818275), (71, 288125), (125, 163655), (355, 57625), (461, 44375), (625, 32731), (1775, 11525), (2305, 8875)]