128400805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{12119}}^1$

素因数の和:12300

約数の個数: 16

約数和(自身を含む): 166965120

約数和(自身を除く): 38564315

約数列:

[1, 5, 13, 65, 163, 815, 2119, 10595, 12119, 60595, 157547, 787735, 1975397, 9876985, 25680161, 128400805]

約数ペア:

[(1, 128400805), (5, 25680161), (13, 9876985), (65, 1975397), (163, 787735), (815, 157547), (2119, 60595), (10595, 12119)]