28161999

素因数分解:

$3^7\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 43033600

約数和(自身を除く): 14871601

約数列:

[1, 3, 9, 27, 79, 81, 163, 237, 243, 489, 711, 729, 1467, 2133, 2187, 4401, 6399, 12877, 13203, 19197, 38631, 39609, 57591, 115893, 118827, 172773, 347679, 356481, 1043037, 3129111, 9387333, 28161999]

約数ペア:

[(1, 28161999), (3, 9387333), (9, 3129111), (27, 1043037), (79, 356481), (81, 347679), (163, 172773), (237, 118827), (243, 115893), (489, 57591), (711, 39609), (729, 38631), (1467, 19197), (2133, 13203), (2187, 12877), (4401, 6399)]