78405489

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{23609}}^1$

素因数の和:23662

約数の個数: 20

約数和(自身を含む): 119986020

約数和(自身を除く): 41580531

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 23609, 70827, 212481, 637443, 967969, 1912329, 2903907, 8711721, 26135163, 78405489]

約数ペア:

[(1, 78405489), (3, 26135163), (9, 8711721), (27, 2903907), (41, 1912329), (81, 967969), (123, 637443), (369, 212481), (1107, 70827), (3321, 23609)]