20201398256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{10771}}^1$

素因数の和:10990

約数の個数: 80

約数和(自身を含む): 43085242368

約数和(自身を除く): 22883844112

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 71, 104, 127, 142, 208, 254, 284, 508, 568, 923, 1016, 1136, 1651, 1846, 2032, 3302, 3692, 6604, 7384, 9017, 10771, 13208, 14768, 18034, 21542, 26416, 36068, 43084, 72136, 86168, 117221, 140023, 144272, 172336, 234442, 280046, 468884, 560092, 764741, 937768, 1120184, 1367917, 1529482, 1875536, 2240368, 2735834, 3058964, 5471668, 6117928, 9941633, 10943336, 12235856, 17782921, 19883266, 21886672, 35565842, 39766532, 71131684, 79533064, 97122107, 142263368, 159066128, 194244214, 284526736, 388488428, 776976856, 1262587391, 1553953712, 2525174782, 5050349564, 10100699128, 20201398256]

約数ペア:

[(1, 20201398256), (2, 10100699128), (4, 5050349564), (8, 2525174782), (13, 1553953712), (16, 1262587391), (26, 776976856), (52, 388488428), (71, 284526736), (104, 194244214), (127, 159066128), (142, 142263368), (208, 97122107), (254, 79533064), (284, 71131684), (508, 39766532), (568, 35565842), (923, 21886672), (1016, 19883266), (1136, 17782921), (1651, 12235856), (1846, 10943336), (2032, 9941633), (3302, 6117928), (3692, 5471668), (6604, 3058964), (7384, 2735834), (9017, 2240368), (10771, 1875536), (13208, 1529482), (14768, 1367917), (18034, 1120184), (21542, 937768), (26416, 764741), (36068, 560092), (43084, 468884), (72136, 280046), (86168, 234442), (117221, 172336), (140023, 144272)]