20857912

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{1489}}^1$

素因数の和:1615

約数の個数: 32

約数和(自身を含む): 41839200

約数和(自身を除く): 20981288

約数列:

[1, 2, 4, 8, 17, 34, 68, 103, 136, 206, 412, 824, 1489, 1751, 2978, 3502, 5956, 7004, 11912, 14008, 25313, 50626, 101252, 153367, 202504, 306734, 613468, 1226936, 2607239, 5214478, 10428956, 20857912]

約数ペア:

[(1, 20857912), (2, 10428956), (4, 5214478), (8, 2607239), (17, 1226936), (34, 613468), (68, 306734), (103, 202504), (136, 153367), (206, 101252), (412, 50626), (824, 25313), (1489, 14008), (1751, 11912), (2978, 7004), (3502, 5956)]