21040728

素因数分解:

$2^3\times 3^1\times {\mathrm{443}}^1\times {\mathrm{1979}}^1$

素因数の和:2431

約数の個数: 32

約数和(自身を含む): 52747200

約数和(自身を除く): 31706472

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 443, 886, 1329, 1772, 1979, 2658, 3544, 3958, 5316, 5937, 7916, 10632, 11874, 15832, 23748, 47496, 876697, 1753394, 2630091, 3506788, 5260182, 7013576, 10520364, 21040728]

約数ペア:

[(1, 21040728), (2, 10520364), (3, 7013576), (4, 5260182), (6, 3506788), (8, 2630091), (12, 1753394), (24, 876697), (443, 47496), (886, 23748), (1329, 15832), (1772, 11874), (1979, 10632), (2658, 7916), (3544, 5937), (3958, 5316)]