21103868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{503}}^1\times {\mathrm{617}}^1$

素因数の和:1141

約数の個数: 24

約数和(自身を含む): 39245472

約数和(自身を除く): 18141604

約数列:

[1, 2, 4, 17, 34, 68, 503, 617, 1006, 1234, 2012, 2468, 8551, 10489, 17102, 20978, 34204, 41956, 310351, 620702, 1241404, 5275967, 10551934, 21103868]

約数ペア:

[(1, 21103868), (2, 10551934), (4, 5275967), (17, 1241404), (34, 620702), (68, 310351), (503, 41956), (617, 34204), (1006, 20978), (1234, 17102), (2012, 10489), (2468, 8551)]