78830980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{36161}}^1$

素因数の和:36279

約数の個数: 24

約数和(自身を含む): 167068440

約数和(自身を除く): 88237460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 36161, 72322, 144644, 180805, 361610, 723220, 3941549, 7883098, 15766196, 19707745, 39415490, 78830980]

約数ペア:

[(1, 78830980), (2, 39415490), (4, 19707745), (5, 15766196), (10, 7883098), (20, 3941549), (109, 723220), (218, 361610), (436, 180805), (545, 144644), (1090, 72322), (2180, 36161)]