20786976

素因数分解:

$2^5\times 3^3\times 7^2\times {\mathrm{491}}^1$

素因数の和:524

約数の個数: 144

約数和(自身を含む): 70670880

約数和(自身を除く): 49883904

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 49, 54, 56, 63, 72, 84, 96, 98, 108, 112, 126, 144, 147, 168, 189, 196, 216, 224, 252, 288, 294, 336, 378, 392, 432, 441, 491, 504, 588, 672, 756, 784, 864, 882, 982, 1008, 1176, 1323, 1473, 1512, 1568, 1764, 1964, 2016, 2352, 2646, 2946, 3024, 3437, 3528, 3928, 4419, 4704, 5292, 5892, 6048, 6874, 7056, 7856, 8838, 10311, 10584, 11784, 13257, 13748, 14112, 15712, 17676, 20622, 21168, 23568, 24059, 26514, 27496, 30933, 35352, 41244, 42336, 47136, 48118, 53028, 54992, 61866, 70704, 72177, 82488, 92799, 96236, 106056, 109984, 123732, 141408, 144354, 164976, 185598, 192472, 212112, 216531, 247464, 288708, 329952, 371196, 384944, 424224, 433062, 494928, 577416, 649593, 742392, 769888, 866124, 989856, 1154832, 1299186, 1484784, 1732248, 2309664, 2598372, 2969568, 3464496, 5196744, 6928992, 10393488, 20786976]

約数ペア:

[(1, 20786976), (2, 10393488), (3, 6928992), (4, 5196744), (6, 3464496), (7, 2969568), (8, 2598372), (9, 2309664), (12, 1732248), (14, 1484784), (16, 1299186), (18, 1154832), (21, 989856), (24, 866124), (27, 769888), (28, 742392), (32, 649593), (36, 577416), (42, 494928), (48, 433062), (49, 424224), (54, 384944), (56, 371196), (63, 329952), (72, 288708), (84, 247464), (96, 216531), (98, 212112), (108, 192472), (112, 185598), (126, 164976), (144, 144354), (147, 141408), (168, 123732), (189, 109984), (196, 106056), (216, 96236), (224, 92799), (252, 82488), (288, 72177), (294, 70704), (336, 61866), (378, 54992), (392, 53028), (432, 48118), (441, 47136), (491, 42336), (504, 41244), (588, 35352), (672, 30933), (756, 27496), (784, 26514), (864, 24059), (882, 23568), (982, 21168), (1008, 20622), (1176, 17676), (1323, 15712), (1473, 14112), (1512, 13748), (1568, 13257), (1764, 11784), (1964, 10584), (2016, 10311), (2352, 8838), (2646, 7856), (2946, 7056), (3024, 6874), (3437, 6048), (3528, 5892), (3928, 5292), (4419, 4704)]