20012080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{22741}}^1$

素因数の和:22765

約数の個数: 40

約数和(自身を含む): 50760144

約数和(自身を除く): 30748064

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 22741, 45482, 90964, 113705, 181928, 227410, 250151, 363856, 454820, 500302, 909640, 1000604, 1250755, 1819280, 2001208, 2501510, 4002416, 5003020, 10006040, 20012080]

約数ペア:

[(1, 20012080), (2, 10006040), (4, 5003020), (5, 4002416), (8, 2501510), (10, 2001208), (11, 1819280), (16, 1250755), (20, 1000604), (22, 909640), (40, 500302), (44, 454820), (55, 363856), (80, 250151), (88, 227410), (110, 181928), (176, 113705), (220, 90964), (440, 45482), (880, 22741)]