81615261

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{1549}}^1$

素因数の和:1765

約数の個数: 32

約数和(自身を含む): 134713600

約数和(自身を除く): 53098339

約数列:

[1, 3, 7, 13, 21, 39, 91, 193, 273, 579, 1351, 1549, 2509, 4053, 4647, 7527, 10843, 17563, 20137, 32529, 52689, 60411, 140959, 298957, 422877, 896871, 2092699, 3886441, 6278097, 11659323, 27205087, 81615261]

約数ペア:

[(1, 81615261), (3, 27205087), (7, 11659323), (13, 6278097), (21, 3886441), (39, 2092699), (91, 896871), (193, 422877), (273, 298957), (579, 140959), (1351, 60411), (1549, 52689), (2509, 32529), (4053, 20137), (4647, 17563), (7527, 10843)]