639184

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{439}}^1$

素因数の和:467

約数の個数: 40

約数和(自身を含む): 1527680

約数和(自身を除く): 888496

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 439, 728, 878, 1456, 1756, 3073, 3512, 5707, 6146, 7024, 11414, 12292, 22828, 24584, 39949, 45656, 49168, 79898, 91312, 159796, 319592, 639184]

約数ペア:

[(1, 639184), (2, 319592), (4, 159796), (7, 91312), (8, 79898), (13, 49168), (14, 45656), (16, 39949), (26, 24584), (28, 22828), (52, 12292), (56, 11414), (91, 7024), (104, 6146), (112, 5707), (182, 3512), (208, 3073), (364, 1756), (439, 1456), (728, 878)]