39780820

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4051}}^1$

素因数の和:4551

約数の個数: 24

約数和(自身を含む): 83730528

約数和(自身を除く): 43949708

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4051, 4910, 8102, 9820, 16204, 20255, 40510, 81020, 1989041, 3978082, 7956164, 9945205, 19890410, 39780820]

約数ペア:

[(1, 39780820), (2, 19890410), (4, 9945205), (5, 7956164), (10, 3978082), (20, 1989041), (491, 81020), (982, 40510), (1964, 20255), (2455, 16204), (4051, 9820), (4910, 8102)]