20131757425

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{2207}}^1$

素因数の和:2387

約数の個数: 72

約数和(自身を含む): 28859867136

約数和(自身を除く): 8728109711

約数列:

[1, 5, 13, 17, 25, 65, 85, 127, 169, 221, 325, 425, 635, 845, 1105, 1651, 2159, 2207, 2873, 3175, 4225, 5525, 8255, 10795, 11035, 14365, 21463, 28067, 28691, 37519, 41275, 53975, 55175, 71825, 107315, 140335, 143455, 187595, 280289, 364871, 372983, 487747, 536575, 701675, 717275, 937975, 1401445, 1824355, 1864915, 2438735, 3643757, 4764913, 6340711, 7007225, 9121775, 9324575, 12193675, 18218785, 23824565, 31703555, 47368841, 61943869, 91093925, 119122825, 158517775, 236844205, 309719345, 805270297, 1184221025, 1548596725, 4026351485, 20131757425]

約数ペア:

[(1, 20131757425), (5, 4026351485), (13, 1548596725), (17, 1184221025), (25, 805270297), (65, 309719345), (85, 236844205), (127, 158517775), (169, 119122825), (221, 91093925), (325, 61943869), (425, 47368841), (635, 31703555), (845, 23824565), (1105, 18218785), (1651, 12193675), (2159, 9324575), (2207, 9121775), (2873, 7007225), (3175, 6340711), (4225, 4764913), (5525, 3643757), (8255, 2438735), (10795, 1864915), (11035, 1824355), (14365, 1401445), (21463, 937975), (28067, 717275), (28691, 701675), (37519, 536575), (41275, 487747), (53975, 372983), (55175, 364871), (71825, 280289), (107315, 187595), (140335, 143455)]