28657811

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{7681}}^1$

素因数の和:7742

約数の個数: 16

約数和(自身を含む): 36136128

約数和(自身を除く): 7478317

約数列:

[1, 7, 13, 41, 91, 287, 533, 3731, 7681, 53767, 99853, 314921, 698971, 2204447, 4093973, 28657811]

約数ペア:

[(1, 28657811), (7, 4093973), (13, 2204447), (41, 698971), (91, 314921), (287, 99853), (533, 53767), (3731, 7681)]