20983356

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 72

約数和(自身を含む): 55692000

約数和(自身を除く): 34708644

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 87, 101, 116, 174, 199, 202, 261, 303, 348, 398, 404, 522, 597, 606, 796, 909, 1044, 1194, 1212, 1791, 1818, 2388, 2929, 3582, 3636, 5771, 5858, 7164, 8787, 11542, 11716, 17313, 17574, 20099, 23084, 26361, 34626, 35148, 40198, 51939, 52722, 60297, 69252, 80396, 103878, 105444, 120594, 180891, 207756, 241188, 361782, 582871, 723564, 1165742, 1748613, 2331484, 3497226, 5245839, 6994452, 10491678, 20983356]

約数ペア:

[(1, 20983356), (2, 10491678), (3, 6994452), (4, 5245839), (6, 3497226), (9, 2331484), (12, 1748613), (18, 1165742), (29, 723564), (36, 582871), (58, 361782), (87, 241188), (101, 207756), (116, 180891), (174, 120594), (199, 105444), (202, 103878), (261, 80396), (303, 69252), (348, 60297), (398, 52722), (404, 51939), (522, 40198), (597, 35148), (606, 34626), (796, 26361), (909, 23084), (1044, 20099), (1194, 17574), (1212, 17313), (1791, 11716), (1818, 11542), (2388, 8787), (2929, 7164), (3582, 5858), (3636, 5771)]