78388880

素因数分解:

$2^4\times 5^1\times {\mathrm{193}}^1\times {\mathrm{5077}}^1$

素因数の和:5283

約数の個数: 40

約数和(自身を含む): 183234552

約数和(自身を除く): 104845672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 193, 386, 772, 965, 1544, 1930, 3088, 3860, 5077, 7720, 10154, 15440, 20308, 25385, 40616, 50770, 81232, 101540, 203080, 406160, 979861, 1959722, 3919444, 4899305, 7838888, 9798610, 15677776, 19597220, 39194440, 78388880]

約数ペア:

[(1, 78388880), (2, 39194440), (4, 19597220), (5, 15677776), (8, 9798610), (10, 7838888), (16, 4899305), (20, 3919444), (40, 1959722), (80, 979861), (193, 406160), (386, 203080), (772, 101540), (965, 81232), (1544, 50770), (1930, 40616), (3088, 25385), (3860, 20308), (5077, 15440), (7720, 10154)]