28481875

素因数分解:

$5^4\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:448

約数の個数: 20

約数和(自身を含む): 35926000

約数和(自身を除く): 7444125

約数列:

[1, 5, 25, 125, 199, 229, 625, 995, 1145, 4975, 5725, 24875, 28625, 45571, 124375, 143125, 227855, 1139275, 5696375, 28481875]

約数ペア:

[(1, 28481875), (5, 5696375), (25, 1139275), (125, 227855), (199, 143125), (229, 124375), (625, 45571), (995, 28625), (1145, 24875), (4975, 5725)]