19402497

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7727}}^1$

素因数の和:7770

約数の個数: 20

約数和(自身を含む): 29922816

約数和(自身を除く): 10520319

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7727, 23181, 69543, 208629, 239537, 625887, 718611, 2155833, 6467499, 19402497]

約数ペア:

[(1, 19402497), (3, 6467499), (9, 2155833), (27, 718611), (31, 625887), (81, 239537), (93, 208629), (279, 69543), (837, 23181), (2511, 7727)]