12871880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{45971}}^1$

素因数の和:45989

約数の個数: 32

約数和(自身を含む): 33099840

約数和(自身を除く): 20227960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 45971, 91942, 183884, 229855, 321797, 367768, 459710, 643594, 919420, 1287188, 1608985, 1838840, 2574376, 3217970, 6435940, 12871880]

約数ペア:

[(1, 12871880), (2, 6435940), (4, 3217970), (5, 2574376), (7, 1838840), (8, 1608985), (10, 1287188), (14, 919420), (20, 643594), (28, 459710), (35, 367768), (40, 321797), (56, 229855), (70, 183884), (140, 91942), (280, 45971)]