57215721

素因数分解:

$3^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1\times {\mathrm{1907}}^1$

素因数の和:2120

約数の個数: 16

約数和(自身を含む): 77937984

約数和(自身を除く): 20722263

約数列:

[1, 3, 73, 137, 219, 411, 1907, 5721, 10001, 30003, 139211, 261259, 417633, 783777, 19071907, 57215721]

約数ペア:

[(1, 57215721), (3, 19071907), (73, 783777), (137, 417633), (219, 261259), (411, 139211), (1907, 30003), (5721, 10001)]