131878040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{470993}}^1$

素因数の和:471011

約数の個数: 32

約数和(自身を含む): 339115680

約数和(自身を除く): 207237640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 470993, 941986, 1883972, 2354965, 3296951, 3767944, 4709930, 6593902, 9419860, 13187804, 16484755, 18839720, 26375608, 32969510, 65939020, 131878040]

約数ペア:

[(1, 131878040), (2, 65939020), (4, 32969510), (5, 26375608), (7, 18839720), (8, 16484755), (10, 13187804), (14, 9419860), (20, 6593902), (28, 4709930), (35, 3767944), (40, 3296951), (56, 2354965), (70, 1883972), (140, 941986), (280, 470993)]