20998808

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2617}}^1$

素因数の和:2699

約数の個数: 32

約数和(自身を含む): 42411600

約数和(自身を除く): 21412792

約数列:

[1, 2, 4, 8, 17, 34, 59, 68, 118, 136, 236, 472, 1003, 2006, 2617, 4012, 5234, 8024, 10468, 20936, 44489, 88978, 154403, 177956, 308806, 355912, 617612, 1235224, 2624851, 5249702, 10499404, 20998808]

約数ペア:

[(1, 20998808), (2, 10499404), (4, 5249702), (8, 2624851), (17, 1235224), (34, 617612), (59, 355912), (68, 308806), (118, 177956), (136, 154403), (236, 88978), (472, 44489), (1003, 20936), (2006, 10468), (2617, 8024), (4012, 5234)]