81398079

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{31513}}^1$

素因数の和:31567

約数の個数: 24

約数和(自身を含む): 137653152

約数和(自身を除く): 56255073

約数列:

[1, 3, 7, 9, 21, 41, 63, 123, 287, 369, 861, 2583, 31513, 94539, 220591, 283617, 661773, 1292033, 1985319, 3876099, 9044231, 11628297, 27132693, 81398079]

約数ペア:

[(1, 81398079), (3, 27132693), (7, 11628297), (9, 9044231), (21, 3876099), (41, 1985319), (63, 1292033), (123, 661773), (287, 283617), (369, 220591), (861, 94539), (2583, 31513)]