20283125

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:143

約数の個数: 40

約数和(自身を含む): 28340928

約数和(自身を除く): 8057803

約数列:

[1, 5, 17, 23, 25, 83, 85, 115, 125, 391, 415, 425, 575, 625, 1411, 1909, 1955, 2075, 2125, 2875, 7055, 9545, 9775, 10375, 10625, 14375, 32453, 35275, 47725, 48875, 51875, 162265, 176375, 238625, 244375, 811325, 881875, 1193125, 4056625, 20283125]

約数ペア:

[(1, 20283125), (5, 4056625), (17, 1193125), (23, 881875), (25, 811325), (83, 244375), (85, 238625), (115, 176375), (125, 162265), (391, 51875), (415, 48875), (425, 47725), (575, 35275), (625, 32453), (1411, 14375), (1909, 10625), (1955, 10375), (2075, 9775), (2125, 9545), (2875, 7055)]