261221467

素因数分解:

${\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{977}}^1$

素因数の和:1278

約数の個数: 16

約数和(自身を含む): 285560352

約数和(自身を除く): 24338885

約数列:

[1, 13, 131, 157, 977, 1703, 2041, 12701, 20567, 127987, 153389, 267371, 1663831, 1994057, 20093959, 261221467]

約数ペア:

[(1, 261221467), (13, 20093959), (131, 1994057), (157, 1663831), (977, 267371), (1703, 153389), (2041, 127987), (12701, 20567)]