19987212

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{859}}^1$

素因数の和:1150

約数の個数: 48

約数和(自身を含む): 53553920

約数和(自身を除く): 33566708

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 277, 554, 831, 859, 1108, 1662, 1718, 1939, 2577, 3324, 3436, 3878, 5154, 5817, 6013, 7756, 10308, 11634, 12026, 18039, 23268, 24052, 36078, 72156, 237943, 475886, 713829, 951772, 1427658, 1665601, 2855316, 3331202, 4996803, 6662404, 9993606, 19987212]

約数ペア:

[(1, 19987212), (2, 9993606), (3, 6662404), (4, 4996803), (6, 3331202), (7, 2855316), (12, 1665601), (14, 1427658), (21, 951772), (28, 713829), (42, 475886), (84, 237943), (277, 72156), (554, 36078), (831, 24052), (859, 23268), (1108, 18039), (1662, 12026), (1718, 11634), (1939, 10308), (2577, 7756), (3324, 6013), (3436, 5817), (3878, 5154)]