81397965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{199}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 148838400

約数和(自身を除く): 67440435

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 67, 111, 165, 185, 199, 201, 335, 407, 555, 597, 737, 995, 1005, 1221, 2035, 2189, 2211, 2479, 2985, 3685, 6105, 6567, 7363, 7437, 10945, 11055, 12395, 13333, 22089, 27269, 32835, 36815, 37185, 39999, 66665, 80993, 81807, 110445, 136345, 146663, 199995, 242979, 404965, 409035, 439989, 493321, 733315, 1214895, 1479963, 2199945, 2466605, 5426531, 7399815, 16279593, 27132655, 81397965]

約数ペア:

[(1, 81397965), (3, 27132655), (5, 16279593), (11, 7399815), (15, 5426531), (33, 2466605), (37, 2199945), (55, 1479963), (67, 1214895), (111, 733315), (165, 493321), (185, 439989), (199, 409035), (201, 404965), (335, 242979), (407, 199995), (555, 146663), (597, 136345), (737, 110445), (995, 81807), (1005, 80993), (1221, 66665), (2035, 39999), (2189, 37185), (2211, 36815), (2479, 32835), (2985, 27269), (3685, 22089), (6105, 13333), (6567, 12395), (7363, 11055), (7437, 10945)]