81216681

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{4877}}^1$

素因数の和:4961

約数の個数: 32

約数和(自身を含む): 135491328

約数和(自身を除く): 54274647

約数列:

[1, 3, 7, 13, 21, 39, 61, 91, 183, 273, 427, 793, 1281, 2379, 4877, 5551, 14631, 16653, 34139, 63401, 102417, 190203, 297497, 443807, 892491, 1331421, 2082479, 3867461, 6247437, 11602383, 27072227, 81216681]

約数ペア:

[(1, 81216681), (3, 27072227), (7, 11602383), (13, 6247437), (21, 3867461), (39, 2082479), (61, 1331421), (91, 892491), (183, 443807), (273, 297497), (427, 190203), (793, 102417), (1281, 63401), (2379, 34139), (4877, 16653), (5551, 14631)]