20807120

素因数分解:

$2^4\times 5^1\times {\mathrm{260089}}^1$

素因数の和:260102

約数の個数: 20

約数和(自身を含む): 48376740

約数和(自身を除く): 27569620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 260089, 520178, 1040356, 1300445, 2080712, 2600890, 4161424, 5201780, 10403560, 20807120]

約数ペア:

[(1, 20807120), (2, 10403560), (4, 5201780), (5, 4161424), (8, 2600890), (10, 2080712), (16, 1300445), (20, 1040356), (40, 520178), (80, 260089)]