18221875

素因数分解:

$5^5\times 7^3\times {\mathrm{17}}^1$

素因数の和:63

約数の個数: 48

約数和(自身を含む): 28123200

約数和(自身を除く): 9901325

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 125, 175, 245, 343, 425, 595, 625, 833, 875, 1225, 1715, 2125, 2975, 3125, 4165, 4375, 5831, 6125, 8575, 10625, 14875, 20825, 21875, 29155, 30625, 42875, 53125, 74375, 104125, 145775, 153125, 214375, 371875, 520625, 728875, 1071875, 2603125, 3644375, 18221875]

約数ペア:

[(1, 18221875), (5, 3644375), (7, 2603125), (17, 1071875), (25, 728875), (35, 520625), (49, 371875), (85, 214375), (119, 153125), (125, 145775), (175, 104125), (245, 74375), (343, 53125), (425, 42875), (595, 30625), (625, 29155), (833, 21875), (875, 20825), (1225, 14875), (1715, 10625), (2125, 8575), (2975, 6125), (3125, 5831), (4165, 4375)]