20115580

素因数分解:

$2^2\times 5^1\times {\mathrm{739}}^1\times {\mathrm{1361}}^1$

素因数の和:2109

約数の個数: 24

約数和(自身を含む): 42330960

約数和(自身を除く): 22215380

約数列:

[1, 2, 4, 5, 10, 20, 739, 1361, 1478, 2722, 2956, 3695, 5444, 6805, 7390, 13610, 14780, 27220, 1005779, 2011558, 4023116, 5028895, 10057790, 20115580]

約数ペア:

[(1, 20115580), (2, 10057790), (4, 5028895), (5, 4023116), (10, 2011558), (20, 1005779), (739, 27220), (1361, 14780), (1478, 13610), (2722, 7390), (2956, 6805), (3695, 5444)]