20578064

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:208

約数の個数: 80

約数和(自身を含む): 46663680

約数和(自身を除く): 26085616

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 41, 52, 76, 82, 104, 127, 152, 164, 208, 247, 254, 304, 328, 494, 508, 533, 656, 779, 988, 1016, 1066, 1558, 1651, 1976, 2032, 2132, 2413, 3116, 3302, 3952, 4264, 4826, 5207, 6232, 6604, 8528, 9652, 10127, 10414, 12464, 13208, 19304, 20254, 20828, 26416, 31369, 38608, 40508, 41656, 62738, 67691, 81016, 83312, 98933, 125476, 135382, 162032, 197866, 250952, 270764, 395732, 501904, 541528, 791464, 1083056, 1286129, 1582928, 2572258, 5144516, 10289032, 20578064]

約数ペア:

[(1, 20578064), (2, 10289032), (4, 5144516), (8, 2572258), (13, 1582928), (16, 1286129), (19, 1083056), (26, 791464), (38, 541528), (41, 501904), (52, 395732), (76, 270764), (82, 250952), (104, 197866), (127, 162032), (152, 135382), (164, 125476), (208, 98933), (247, 83312), (254, 81016), (304, 67691), (328, 62738), (494, 41656), (508, 40508), (533, 38608), (656, 31369), (779, 26416), (988, 20828), (1016, 20254), (1066, 19304), (1558, 13208), (1651, 12464), (1976, 10414), (2032, 10127), (2132, 9652), (2413, 8528), (3116, 6604), (3302, 6232), (3952, 5207), (4264, 4826)]