81367480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 188324640

約数和(自身を除く): 106957160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 97, 134, 194, 268, 313, 335, 388, 485, 536, 626, 670, 776, 970, 1252, 1340, 1565, 1940, 2504, 2680, 3130, 3880, 6260, 6499, 12520, 12998, 20971, 25996, 30361, 32495, 41942, 51992, 60722, 64990, 83884, 104855, 121444, 129980, 151805, 167768, 209710, 242888, 259960, 303610, 419420, 607220, 838840, 1214440, 2034187, 4068374, 8136748, 10170935, 16273496, 20341870, 40683740, 81367480]

約数ペア:

[(1, 81367480), (2, 40683740), (4, 20341870), (5, 16273496), (8, 10170935), (10, 8136748), (20, 4068374), (40, 2034187), (67, 1214440), (97, 838840), (134, 607220), (194, 419420), (268, 303610), (313, 259960), (335, 242888), (388, 209710), (485, 167768), (536, 151805), (626, 129980), (670, 121444), (776, 104855), (970, 83884), (1252, 64990), (1340, 60722), (1565, 51992), (1940, 41942), (2504, 32495), (2680, 30361), (3130, 25996), (3880, 20971), (6260, 12998), (6499, 12520)]