81991143

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{1223}}^1$

素因数の和:1436

約数の個数: 32

約数和(自身を含む): 131604480

約数和(自身を除く): 49613337

約数列:

[1, 3, 9, 13, 27, 39, 117, 191, 351, 573, 1223, 1719, 2483, 3669, 5157, 7449, 11007, 15899, 22347, 33021, 47697, 67041, 143091, 233593, 429273, 700779, 2102337, 3036709, 6307011, 9110127, 27330381, 81991143]

約数ペア:

[(1, 81991143), (3, 27330381), (9, 9110127), (13, 6307011), (27, 3036709), (39, 2102337), (117, 700779), (191, 429273), (351, 233593), (573, 143091), (1223, 67041), (1719, 47697), (2483, 33021), (3669, 22347), (5157, 15899), (7449, 11007)]