81886217

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 100422144

約数和(自身を除く): 18535927

約数列:

[1, 7, 37, 61, 71, 73, 259, 427, 497, 511, 2257, 2627, 2701, 4331, 4453, 5183, 15799, 18389, 18907, 30317, 31171, 36281, 160247, 164761, 191771, 316163, 1121729, 1153327, 1342397, 2213141, 11698031, 81886217]

約数ペア:

[(1, 81886217), (7, 11698031), (37, 2213141), (61, 1342397), (71, 1153327), (73, 1121729), (259, 316163), (427, 191771), (497, 164761), (511, 160247), (2257, 36281), (2627, 31171), (2701, 30317), (4331, 18907), (4453, 18389), (5183, 15799)]