20956712

素因数分解:

$2^3\times 7^2\times {\mathrm{193}}^1\times {\mathrm{277}}^1$

素因数の和:490

約数の個数: 48

約数和(自身を含む): 46111860

約数和(自身を除く): 25155148

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 193, 196, 277, 386, 392, 554, 772, 1108, 1351, 1544, 1939, 2216, 2702, 3878, 5404, 7756, 9457, 10808, 13573, 15512, 18914, 27146, 37828, 53461, 54292, 75656, 106922, 108584, 213844, 374227, 427688, 748454, 1496908, 2619589, 2993816, 5239178, 10478356, 20956712]

約数ペア:

[(1, 20956712), (2, 10478356), (4, 5239178), (7, 2993816), (8, 2619589), (14, 1496908), (28, 748454), (49, 427688), (56, 374227), (98, 213844), (193, 108584), (196, 106922), (277, 75656), (386, 54292), (392, 53461), (554, 37828), (772, 27146), (1108, 18914), (1351, 15512), (1544, 13573), (1939, 10808), (2216, 9457), (2702, 7756), (3878, 5404)]