81979245

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{769}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 149909760

約数和(自身を除く): 67930515

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 103, 115, 207, 309, 345, 515, 769, 927, 1035, 1545, 2307, 2369, 3845, 4635, 6921, 7107, 11535, 11845, 17687, 21321, 34605, 35535, 53061, 79207, 88435, 106605, 159183, 237621, 265305, 396035, 712863, 795915, 1188105, 1821761, 3564315, 5465283, 9108805, 16395849, 27326415, 81979245]

約数ペア:

[(1, 81979245), (3, 27326415), (5, 16395849), (9, 9108805), (15, 5465283), (23, 3564315), (45, 1821761), (69, 1188105), (103, 795915), (115, 712863), (207, 396035), (309, 265305), (345, 237621), (515, 159183), (769, 106605), (927, 88435), (1035, 79207), (1545, 53061), (2307, 35535), (2369, 34605), (3845, 21321), (4635, 17687), (6921, 11845), (7107, 11535)]