20909868

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 58145472

約数和(自身を除く): 37235604

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 43, 49, 84, 86, 98, 129, 147, 172, 196, 258, 294, 301, 516, 588, 602, 827, 903, 1204, 1654, 1806, 2107, 2481, 3308, 3612, 4214, 4962, 5789, 6321, 8428, 9924, 11578, 12642, 17367, 23156, 25284, 34734, 35561, 40523, 69468, 71122, 81046, 106683, 121569, 142244, 162092, 213366, 243138, 248927, 426732, 486276, 497854, 746781, 995708, 1493562, 1742489, 2987124, 3484978, 5227467, 6969956, 10454934, 20909868]

約数ペア:

[(1, 20909868), (2, 10454934), (3, 6969956), (4, 5227467), (6, 3484978), (7, 2987124), (12, 1742489), (14, 1493562), (21, 995708), (28, 746781), (42, 497854), (43, 486276), (49, 426732), (84, 248927), (86, 243138), (98, 213366), (129, 162092), (147, 142244), (172, 121569), (196, 106683), (258, 81046), (294, 71122), (301, 69468), (516, 40523), (588, 35561), (602, 34734), (827, 25284), (903, 23156), (1204, 17367), (1654, 12642), (1806, 11578), (2107, 9924), (2481, 8428), (3308, 6321), (3612, 5789), (4214, 4962)]