81316599

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 143324160

約数和(自身を除く): 62007561

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 61, 91, 133, 183, 247, 257, 273, 399, 427, 741, 771, 793, 1159, 1281, 1729, 1799, 2379, 3341, 3477, 4883, 5187, 5397, 5551, 8113, 10023, 14649, 15067, 15677, 16653, 23387, 24339, 34181, 45201, 47031, 63479, 70161, 102543, 105469, 109739, 190437, 203801, 297863, 316407, 329217, 444353, 611403, 893589, 1333059, 1426607, 2085041, 3872219, 4279821, 6255123, 11616657, 27105533, 81316599]

約数ペア:

[(1, 81316599), (3, 27105533), (7, 11616657), (13, 6255123), (19, 4279821), (21, 3872219), (39, 2085041), (57, 1426607), (61, 1333059), (91, 893589), (133, 611403), (183, 444353), (247, 329217), (257, 316407), (273, 297863), (399, 203801), (427, 190437), (741, 109739), (771, 105469), (793, 102543), (1159, 70161), (1281, 63479), (1729, 47031), (1799, 45201), (2379, 34181), (3341, 24339), (3477, 23387), (4883, 16653), (5187, 15677), (5397, 15067), (5551, 14649), (8113, 10023)]