208761640

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{10459}}^1$

素因数の和:10969

約数の個数: 32

約数和(自身を含む): 470700000

約数和(自身を除く): 261938360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 998, 1996, 2495, 3992, 4990, 9980, 10459, 19960, 20918, 41836, 52295, 83672, 104590, 209180, 418360, 5219041, 10438082, 20876164, 26095205, 41752328, 52190410, 104380820, 208761640]

約数ペア:

[(1, 208761640), (2, 104380820), (4, 52190410), (5, 41752328), (8, 26095205), (10, 20876164), (20, 10438082), (40, 5219041), (499, 418360), (998, 209180), (1996, 104590), (2495, 83672), (3992, 52295), (4990, 41836), (9980, 20918), (10459, 19960)]