81665213

素因数分解:

$7^5\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:191

約数の個数: 24

約数和(自身を含む): 98353728

約数和(自身を除く): 16688515

約数列:

[1, 7, 43, 49, 113, 301, 343, 791, 2107, 2401, 4859, 5537, 14749, 16807, 34013, 38759, 103243, 238091, 271313, 722701, 1666637, 1899191, 11666459, 81665213]

約数ペア:

[(1, 81665213), (7, 11666459), (43, 1899191), (49, 1666637), (113, 722701), (301, 271313), (343, 238091), (791, 103243), (2107, 38759), (2401, 34013), (4859, 16807), (5537, 14749)]