20737145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 30989952

約数和(自身を除く): 10252807

約数列:

[1, 5, 11, 13, 23, 55, 65, 97, 115, 143, 169, 253, 299, 485, 715, 845, 1067, 1261, 1265, 1495, 1859, 2231, 3289, 3887, 5335, 6305, 9295, 11155, 13871, 16393, 16445, 19435, 24541, 29003, 42757, 69355, 81965, 122705, 145015, 180323, 213785, 319033, 377039, 901615, 1595165, 1885195, 4147429, 20737145]

約数ペア:

[(1, 20737145), (5, 4147429), (11, 1885195), (13, 1595165), (23, 901615), (55, 377039), (65, 319033), (97, 213785), (115, 180323), (143, 145015), (169, 122705), (253, 81965), (299, 69355), (485, 42757), (715, 29003), (845, 24541), (1067, 19435), (1261, 16445), (1265, 16393), (1495, 13871), (1859, 11155), (2231, 9295), (3289, 6305), (3887, 5335)]