2800880

素因数分解:

$2^4\times 5^1\times {\mathrm{157}}^1\times {\mathrm{223}}^1$

素因数の和:393

約数の個数: 40

約数和(自身を含む): 6582912

約数和(自身を除く): 3782032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 157, 223, 314, 446, 628, 785, 892, 1115, 1256, 1570, 1784, 2230, 2512, 3140, 3568, 4460, 6280, 8920, 12560, 17840, 35011, 70022, 140044, 175055, 280088, 350110, 560176, 700220, 1400440, 2800880]

約数ペア:

[(1, 2800880), (2, 1400440), (4, 700220), (5, 560176), (8, 350110), (10, 280088), (16, 175055), (20, 140044), (40, 70022), (80, 35011), (157, 17840), (223, 12560), (314, 8920), (446, 6280), (628, 4460), (785, 3568), (892, 3140), (1115, 2512), (1256, 2230), (1570, 1784)]