81997237

素因数分解:

$7^3\times {\mathrm{61}}^1\times {\mathrm{3919}}^1$

素因数の和:4001

約数の個数: 16

約数和(自身を含む): 97216000

約数和(自身を除く): 15218763

約数列:

[1, 7, 49, 61, 343, 427, 2989, 3919, 20923, 27433, 192031, 239059, 1344217, 1673413, 11713891, 81997237]

約数ペア:

[(1, 81997237), (7, 11713891), (49, 1673413), (61, 1344217), (343, 239059), (427, 192031), (2989, 27433), (3919, 20923)]