20983536

素因数分解:

$2^4\times 3^6\times 7^1\times {\mathrm{257}}^1$

素因数の和:290

約数の個数: 140

約数和(自身を含む): 69934512

約数和(自身を除く): 48950976

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 54, 56, 63, 72, 81, 84, 108, 112, 126, 144, 162, 168, 189, 216, 243, 252, 257, 324, 336, 378, 432, 486, 504, 514, 567, 648, 729, 756, 771, 972, 1008, 1028, 1134, 1296, 1458, 1512, 1542, 1701, 1799, 1944, 2056, 2268, 2313, 2916, 3024, 3084, 3402, 3598, 3888, 4112, 4536, 4626, 5103, 5397, 5832, 6168, 6804, 6939, 7196, 9072, 9252, 10206, 10794, 11664, 12336, 13608, 13878, 14392, 16191, 18504, 20412, 20817, 21588, 27216, 27756, 28784, 32382, 37008, 40824, 41634, 43176, 48573, 55512, 62451, 64764, 81648, 83268, 86352, 97146, 111024, 124902, 129528, 145719, 166536, 187353, 194292, 249804, 259056, 291438, 333072, 374706, 388584, 437157, 499608, 582876, 749412, 777168, 874314, 999216, 1165752, 1311471, 1498824, 1748628, 2331504, 2622942, 2997648, 3497256, 5245884, 6994512, 10491768, 20983536]

約数ペア:

[(1, 20983536), (2, 10491768), (3, 6994512), (4, 5245884), (6, 3497256), (7, 2997648), (8, 2622942), (9, 2331504), (12, 1748628), (14, 1498824), (16, 1311471), (18, 1165752), (21, 999216), (24, 874314), (27, 777168), (28, 749412), (36, 582876), (42, 499608), (48, 437157), (54, 388584), (56, 374706), (63, 333072), (72, 291438), (81, 259056), (84, 249804), (108, 194292), (112, 187353), (126, 166536), (144, 145719), (162, 129528), (168, 124902), (189, 111024), (216, 97146), (243, 86352), (252, 83268), (257, 81648), (324, 64764), (336, 62451), (378, 55512), (432, 48573), (486, 43176), (504, 41634), (514, 40824), (567, 37008), (648, 32382), (729, 28784), (756, 27756), (771, 27216), (972, 21588), (1008, 20817), (1028, 20412), (1134, 18504), (1296, 16191), (1458, 14392), (1512, 13878), (1542, 13608), (1701, 12336), (1799, 11664), (1944, 10794), (2056, 10206), (2268, 9252), (2313, 9072), (2916, 7196), (3024, 6939), (3084, 6804), (3402, 6168), (3598, 5832), (3888, 5397), (4112, 5103), (4536, 4626)]