80516556

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:224

約数の個数: 108

約数和(自身を含む): 221261040

約数和(自身を除く): 140744484

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 71, 102, 109, 142, 153, 204, 213, 218, 284, 289, 306, 327, 426, 436, 578, 612, 639, 654, 852, 867, 981, 1156, 1207, 1278, 1308, 1734, 1853, 1962, 2414, 2556, 2601, 3468, 3621, 3706, 3924, 4828, 5202, 5559, 7242, 7412, 7739, 10404, 10863, 11118, 14484, 15478, 16677, 20519, 21726, 22236, 23217, 30956, 31501, 33354, 41038, 43452, 46434, 61557, 63002, 66708, 69651, 82076, 92868, 94503, 123114, 126004, 131563, 139302, 184671, 189006, 246228, 263126, 278604, 283509, 369342, 378012, 394689, 526252, 567018, 738684, 789378, 1134036, 1184067, 1578756, 2236571, 2368134, 4473142, 4736268, 6709713, 8946284, 13419426, 20129139, 26838852, 40258278, 80516556]

約数ペア:

[(1, 80516556), (2, 40258278), (3, 26838852), (4, 20129139), (6, 13419426), (9, 8946284), (12, 6709713), (17, 4736268), (18, 4473142), (34, 2368134), (36, 2236571), (51, 1578756), (68, 1184067), (71, 1134036), (102, 789378), (109, 738684), (142, 567018), (153, 526252), (204, 394689), (213, 378012), (218, 369342), (284, 283509), (289, 278604), (306, 263126), (327, 246228), (426, 189006), (436, 184671), (578, 139302), (612, 131563), (639, 126004), (654, 123114), (852, 94503), (867, 92868), (981, 82076), (1156, 69651), (1207, 66708), (1278, 63002), (1308, 61557), (1734, 46434), (1853, 43452), (1962, 41038), (2414, 33354), (2556, 31501), (2601, 30956), (3468, 23217), (3621, 22236), (3706, 21726), (3924, 20519), (4828, 16677), (5202, 15478), (5559, 14484), (7242, 11118), (7412, 10863), (7739, 10404)]