20801320

素因数分解:

$2^3\times 5^1\times {\mathrm{433}}^1\times {\mathrm{1201}}^1$

素因数の和:1645

約数の個数: 32

約数和(自身を含む): 46950120

約数和(自身を除く): 26148800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 433, 866, 1201, 1732, 2165, 2402, 3464, 4330, 4804, 6005, 8660, 9608, 12010, 17320, 24020, 48040, 520033, 1040066, 2080132, 2600165, 4160264, 5200330, 10400660, 20801320]

約数ペア:

[(1, 20801320), (2, 10400660), (4, 5200330), (5, 4160264), (8, 2600165), (10, 2080132), (20, 1040066), (40, 520033), (433, 48040), (866, 24020), (1201, 17320), (1732, 12010), (2165, 9608), (2402, 8660), (3464, 6005), (4330, 4804)]