81991869

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 116659200

約数和(自身を除く): 34667331

約数列:

[1, 3, 31, 61, 93, 97, 149, 183, 291, 447, 1891, 3007, 4619, 5673, 5917, 9021, 9089, 13857, 14453, 17751, 27267, 43359, 183427, 281759, 448043, 550281, 845277, 881633, 1344129, 2644899, 27330623, 81991869]

約数ペア:

[(1, 81991869), (3, 27330623), (31, 2644899), (61, 1344129), (93, 881633), (97, 845277), (149, 550281), (183, 448043), (291, 281759), (447, 183427), (1891, 43359), (3007, 27267), (4619, 17751), (5673, 14453), (5917, 13857), (9021, 9089)]