13897220

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{4999}}^1$

素因数の和:5147

約数の個数: 24

約数和(自身を含む): 29400000

約数和(自身を除く): 15502780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 4999, 9998, 19996, 24995, 49990, 99980, 694861, 1389722, 2779444, 3474305, 6948610, 13897220]

約数ペア:

[(1, 13897220), (2, 6948610), (4, 3474305), (5, 2779444), (10, 1389722), (20, 694861), (139, 99980), (278, 49990), (556, 24995), (695, 19996), (1390, 9998), (2780, 4999)]