81991798

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{19457}}^1$

素因数の和:19516

約数の個数: 24

約数和(自身を含む): 146401992

約数和(自身を除く): 64410194

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 19457, 38914, 136199, 272398, 836651, 953393, 1673302, 1906786, 5856557, 11713114, 40995899, 81991798]

約数ペア:

[(1, 81991798), (2, 40995899), (7, 11713114), (14, 5856557), (43, 1906786), (49, 1673302), (86, 953393), (98, 836651), (301, 272398), (602, 136199), (2107, 38914), (4214, 19457)]