20804985388

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{251}}^1\times {\mathrm{4177}}^1$

素因数の和:4495

約数の個数: 72

約数和(自身を含む): 41168775312

約数和(自身を除く): 20363789924

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 251, 451, 484, 502, 902, 1004, 1804, 2761, 4177, 4961, 5522, 8354, 9922, 10291, 11044, 16708, 19844, 20582, 30371, 41164, 45947, 60742, 91894, 113201, 121484, 171257, 183788, 226402, 342514, 452804, 505417, 685028, 1010834, 1048427, 1245211, 1883827, 2021668, 2096854, 2490422, 3767654, 4193708, 4980844, 7535308, 11532697, 20722097, 23065394, 41444194, 42985507, 46130788, 82888388, 85971014, 126859667, 171942028, 253719334, 472840577, 507438668, 945681154, 1891362308, 5201246347, 10402492694, 20804985388]

約数ペア:

[(1, 20804985388), (2, 10402492694), (4, 5201246347), (11, 1891362308), (22, 945681154), (41, 507438668), (44, 472840577), (82, 253719334), (121, 171942028), (164, 126859667), (242, 85971014), (251, 82888388), (451, 46130788), (484, 42985507), (502, 41444194), (902, 23065394), (1004, 20722097), (1804, 11532697), (2761, 7535308), (4177, 4980844), (4961, 4193708), (5522, 3767654), (8354, 2490422), (9922, 2096854), (10291, 2021668), (11044, 1883827), (16708, 1245211), (19844, 1048427), (20582, 1010834), (30371, 685028), (41164, 505417), (45947, 452804), (60742, 342514), (91894, 226402), (113201, 183788), (121484, 171257)]