20639870

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{383}}^1$

素因数の和:724

約数の個数: 32

約数和(自身を含む): 39564288

約数和(自身を除く): 18924418

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 317, 383, 634, 766, 1585, 1915, 3170, 3830, 5389, 6511, 10778, 13022, 26945, 32555, 53890, 65110, 121411, 242822, 607055, 1214110, 2063987, 4127974, 10319935, 20639870]

約数ペア:

[(1, 20639870), (2, 10319935), (5, 4127974), (10, 2063987), (17, 1214110), (34, 607055), (85, 242822), (170, 121411), (317, 65110), (383, 53890), (634, 32555), (766, 26945), (1585, 13022), (1915, 10778), (3170, 6511), (3830, 5389)]