19964978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{24527}}^1$

素因数の和:24577

約数の個数: 16

約数和(自身を含む): 33554304

約数和(自身を除く): 13589326

約数列:

[1, 2, 11, 22, 37, 74, 407, 814, 24527, 49054, 269797, 539594, 907499, 1814998, 9982489, 19964978]

約数ペア:

[(1, 19964978), (2, 9982489), (11, 1814998), (22, 907499), (37, 539594), (74, 269797), (407, 49054), (814, 24527)]