20647445

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1973}}^1$

素因数の和:2021

約数の個数: 32

約数和(自身を含む): 31836672

約数和(自身を除く): 11189227

約数列:

[1, 5, 7, 13, 23, 35, 65, 91, 115, 161, 299, 455, 805, 1495, 1973, 2093, 9865, 10465, 13811, 25649, 45379, 69055, 128245, 179543, 226895, 317653, 589927, 897715, 1588265, 2949635, 4129489, 20647445]

約数ペア:

[(1, 20647445), (5, 4129489), (7, 2949635), (13, 1588265), (23, 897715), (35, 589927), (65, 317653), (91, 226895), (115, 179543), (161, 128245), (299, 69055), (455, 45379), (805, 25649), (1495, 13811), (1973, 10465), (2093, 9865)]