78888560

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{20981}}^1$

素因数の和:21041

約数の個数: 40

約数和(自身を含む): 187327296

約数和(自身を除く): 108438736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 20981, 41962, 83924, 104905, 167848, 209810, 335696, 419620, 839240, 986107, 1678480, 1972214, 3944428, 4930535, 7888856, 9861070, 15777712, 19722140, 39444280, 78888560]

約数ペア:

[(1, 78888560), (2, 39444280), (4, 19722140), (5, 15777712), (8, 9861070), (10, 7888856), (16, 4930535), (20, 3944428), (40, 1972214), (47, 1678480), (80, 986107), (94, 839240), (188, 419620), (235, 335696), (376, 209810), (470, 167848), (752, 104905), (940, 83924), (1880, 41962), (3760, 20981)]