81990315

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2269}}^1$

素因数の和:2364

約数の個数: 48

約数和(自身を含む): 157229280

約数和(自身を除く): 75238965

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 73, 99, 165, 219, 365, 495, 657, 803, 1095, 2269, 2409, 3285, 4015, 6807, 7227, 11345, 12045, 20421, 24959, 34035, 36135, 74877, 102105, 124795, 165637, 224631, 374385, 496911, 828185, 1123155, 1490733, 1822007, 2484555, 5466021, 7453665, 9110035, 16398063, 27330105, 81990315]

約数ペア:

[(1, 81990315), (3, 27330105), (5, 16398063), (9, 9110035), (11, 7453665), (15, 5466021), (33, 2484555), (45, 1822007), (55, 1490733), (73, 1123155), (99, 828185), (165, 496911), (219, 374385), (365, 224631), (495, 165637), (657, 124795), (803, 102105), (1095, 74877), (2269, 36135), (2409, 34035), (3285, 24959), (4015, 20421), (6807, 12045), (7227, 11345)]