20512856

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1483}}^1$

素因数の和:1528

約数の個数: 64

約数和(自身を含む): 49862400

約数和(自身を除く): 29349544

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1483, 1729, 1976, 2966, 3458, 5932, 6916, 10381, 11864, 13832, 19279, 20762, 28177, 38558, 41524, 56354, 77116, 83048, 112708, 134953, 154232, 197239, 225416, 269906, 366301, 394478, 539812, 732602, 788956, 1079624, 1465204, 1577912, 2564107, 2930408, 5128214, 10256428, 20512856]

約数ペア:

[(1, 20512856), (2, 10256428), (4, 5128214), (7, 2930408), (8, 2564107), (13, 1577912), (14, 1465204), (19, 1079624), (26, 788956), (28, 732602), (38, 539812), (52, 394478), (56, 366301), (76, 269906), (91, 225416), (104, 197239), (133, 154232), (152, 134953), (182, 112708), (247, 83048), (266, 77116), (364, 56354), (494, 41524), (532, 38558), (728, 28177), (988, 20762), (1064, 19279), (1483, 13832), (1729, 11864), (1976, 10381), (2966, 6916), (3458, 5932)]