21276080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37993}}^1$

素因数の和:38013

約数の個数: 40

約数和(自身を含む): 56535072

約数和(自身を除く): 35258992

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37993, 75986, 151972, 189965, 265951, 303944, 379930, 531902, 607888, 759860, 1063804, 1329755, 1519720, 2127608, 2659510, 3039440, 4255216, 5319020, 10638040, 21276080]

約数ペア:

[(1, 21276080), (2, 10638040), (4, 5319020), (5, 4255216), (7, 3039440), (8, 2659510), (10, 2127608), (14, 1519720), (16, 1329755), (20, 1063804), (28, 759860), (35, 607888), (40, 531902), (56, 379930), (70, 303944), (80, 265951), (112, 189965), (140, 151972), (280, 75986), (560, 37993)]