20404258

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1\times {\mathrm{257}}^1$

素因数の和:426

約数の個数: 32

約数和(自身を含む): 36111744

約数和(自身を除く): 15707486

約数列:

[1, 2, 7, 14, 53, 106, 107, 214, 257, 371, 514, 742, 749, 1498, 1799, 3598, 5671, 11342, 13621, 27242, 27499, 39697, 54998, 79394, 95347, 190694, 192493, 384986, 1457447, 2914894, 10202129, 20404258]

約数ペア:

[(1, 20404258), (2, 10202129), (7, 2914894), (14, 1457447), (53, 384986), (106, 192493), (107, 190694), (214, 95347), (257, 79394), (371, 54998), (514, 39697), (742, 27499), (749, 27242), (1498, 13621), (1799, 11342), (3598, 5671)]