65808280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40127}}^1$

素因数の和:40179

約数の個数: 32

約数和(自身を含む): 151683840

約数和(自身を除く): 85875560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40127, 80254, 160508, 200635, 321016, 401270, 802540, 1605080, 1645207, 3290414, 6580828, 8226035, 13161656, 16452070, 32904140, 65808280]

約数ペア:

[(1, 65808280), (2, 32904140), (4, 16452070), (5, 13161656), (8, 8226035), (10, 6580828), (20, 3290414), (40, 1645207), (41, 1605080), (82, 802540), (164, 401270), (205, 321016), (328, 200635), (410, 160508), (820, 80254), (1640, 40127)]