20979528

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{701}}^1$

素因数の和:782

約数の個数: 64

約数和(自身を含む): 55598400

約数和(自身を除く): 34618872

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 43, 58, 86, 87, 116, 129, 172, 174, 232, 258, 344, 348, 516, 696, 701, 1032, 1247, 1402, 2103, 2494, 2804, 3741, 4206, 4988, 5608, 7482, 8412, 9976, 14964, 16824, 20329, 29928, 30143, 40658, 60286, 60987, 81316, 90429, 120572, 121974, 162632, 180858, 241144, 243948, 361716, 487896, 723432, 874147, 1748294, 2622441, 3496588, 5244882, 6993176, 10489764, 20979528]

約数ペア:

[(1, 20979528), (2, 10489764), (3, 6993176), (4, 5244882), (6, 3496588), (8, 2622441), (12, 1748294), (24, 874147), (29, 723432), (43, 487896), (58, 361716), (86, 243948), (87, 241144), (116, 180858), (129, 162632), (172, 121974), (174, 120572), (232, 90429), (258, 81316), (344, 60987), (348, 60286), (516, 40658), (696, 30143), (701, 29928), (1032, 20329), (1247, 16824), (1402, 14964), (2103, 9976), (2494, 8412), (2804, 7482), (3741, 5608), (4206, 4988)]