12808280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{887}}^1$

素因数の和:936

約数の個数: 48

約数和(自身を含む): 30449520

約数和(自身を除く): 17641240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 887, 1444, 1774, 1805, 2888, 3548, 3610, 4435, 7096, 7220, 8870, 14440, 16853, 17740, 33706, 35480, 67412, 84265, 134824, 168530, 320207, 337060, 640414, 674120, 1280828, 1601035, 2561656, 3202070, 6404140, 12808280]

約数ペア:

[(1, 12808280), (2, 6404140), (4, 3202070), (5, 2561656), (8, 1601035), (10, 1280828), (19, 674120), (20, 640414), (38, 337060), (40, 320207), (76, 168530), (95, 134824), (152, 84265), (190, 67412), (361, 35480), (380, 33706), (722, 17740), (760, 16853), (887, 14440), (1444, 8870), (1774, 7220), (1805, 7096), (2888, 4435), (3548, 3610)]