18806125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:262

約数の個数: 32

約数和(自身を含む): 25788672

約数和(自身を除く): 6982547

約数列:

[1, 5, 13, 25, 65, 71, 125, 163, 325, 355, 815, 923, 1625, 1775, 2119, 4075, 4615, 8875, 10595, 11573, 20375, 23075, 52975, 57865, 115375, 150449, 264875, 289325, 752245, 1446625, 3761225, 18806125]

約数ペア:

[(1, 18806125), (5, 3761225), (13, 1446625), (25, 752245), (65, 289325), (71, 264875), (125, 150449), (163, 115375), (325, 57865), (355, 52975), (815, 23075), (923, 20375), (1625, 11573), (1775, 10595), (2119, 8875), (4075, 4615)]