81912859

素因数分解:

$7^3\times {\mathrm{131}}^1\times {\mathrm{1823}}^1$

素因数の和:1975

約数の個数: 16

約数和(自身を含む): 96307200

約数和(自身を除く): 14394341

約数列:

[1, 7, 49, 131, 343, 917, 1823, 6419, 12761, 44933, 89327, 238813, 625289, 1671691, 11701837, 81912859]

約数ペア:

[(1, 81912859), (7, 11701837), (49, 1671691), (131, 625289), (343, 238813), (917, 89327), (1823, 44933), (6419, 12761)]