28706875

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{1997}}^1$

素因数の和:2040

約数の個数: 20

約数和(自身を含む): 37450512

約数和(自身を除く): 8743637

約数列:

[1, 5, 23, 25, 115, 125, 575, 625, 1997, 2875, 9985, 14375, 45931, 49925, 229655, 249625, 1148275, 1248125, 5741375, 28706875]

約数ペア:

[(1, 28706875), (5, 5741375), (23, 1248125), (25, 1148275), (115, 249625), (125, 229655), (575, 49925), (625, 45931), (1997, 14375), (2875, 9985)]