78312920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{279689}}^1$

素因数の和:279707

約数の個数: 32

約数和(自身を含む): 201376800

約数和(自身を除く): 123063880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 279689, 559378, 1118756, 1398445, 1957823, 2237512, 2796890, 3915646, 5593780, 7831292, 9789115, 11187560, 15662584, 19578230, 39156460, 78312920]

約数ペア:

[(1, 78312920), (2, 39156460), (4, 19578230), (5, 15662584), (7, 11187560), (8, 9789115), (10, 7831292), (14, 5593780), (20, 3915646), (28, 2796890), (35, 2237512), (40, 1957823), (56, 1398445), (70, 1118756), (140, 559378), (280, 279689)]