81799921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{431}}^1\times {\mathrm{1427}}^1$

素因数の和:1884

約数の個数: 16

約数和(自身を含む): 98703360

約数和(自身を除く): 16903439

約数列:

[1, 7, 19, 133, 431, 1427, 3017, 8189, 9989, 27113, 57323, 189791, 615037, 4305259, 11685703, 81799921]

約数ペア:

[(1, 81799921), (7, 11685703), (19, 4305259), (133, 615037), (431, 189791), (1427, 57323), (3017, 27113), (8189, 9989)]