20464145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 27783168

約数和(自身を除く): 7319023

約数列:

[1, 5, 13, 37, 65, 67, 127, 185, 335, 481, 635, 871, 1651, 2405, 2479, 4355, 4699, 8255, 8509, 12395, 23495, 32227, 42545, 61087, 110617, 161135, 305435, 314833, 553085, 1574165, 4092829, 20464145]

約数ペア:

[(1, 20464145), (5, 4092829), (13, 1574165), (37, 553085), (65, 314833), (67, 305435), (127, 161135), (185, 110617), (335, 61087), (481, 42545), (635, 32227), (871, 23495), (1651, 12395), (2405, 8509), (2479, 8255), (4355, 4699)]