18784791

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7481}}^1$

素因数の和:7524

約数の個数: 20

約数和(自身を含む): 28970304

約数和(自身を除く): 10185513

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7481, 22443, 67329, 201987, 231911, 605961, 695733, 2087199, 6261597, 18784791]

約数ペア:

[(1, 18784791), (3, 6261597), (9, 2087199), (27, 695733), (31, 605961), (81, 231911), (93, 201987), (279, 67329), (837, 22443), (2511, 7481)]