18907655

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{241}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 26345088

約数和(自身を除く): 7437433

約数列:

[1, 5, 13, 17, 65, 71, 85, 221, 241, 355, 923, 1105, 1205, 1207, 3133, 4097, 4615, 6035, 15665, 15691, 17111, 20485, 53261, 78455, 85555, 222443, 266305, 290887, 1112215, 1454435, 3781531, 18907655]

約数ペア:

[(1, 18907655), (5, 3781531), (13, 1454435), (17, 1112215), (65, 290887), (71, 266305), (85, 222443), (221, 85555), (241, 78455), (355, 53261), (923, 20485), (1105, 17111), (1205, 15691), (1207, 15665), (3133, 6035), (4097, 4615)]