18220587

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{78877}}^1$

素因数の和:78898

約数の個数: 16

約数和(自身を含む): 30289152

約数和(自身を除く): 12068565

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 78877, 236631, 552139, 867647, 1656417, 2602941, 6073529, 18220587]

約数ペア:

[(1, 18220587), (3, 6073529), (7, 2602941), (11, 1656417), (21, 867647), (33, 552139), (77, 236631), (231, 78877)]