20989860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{349831}}^1$

素因数の和:349843

約数の個数: 24

約数和(自身を含む): 58771776

約数和(自身を除く): 37781916

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 349831, 699662, 1049493, 1399324, 1749155, 2098986, 3498310, 4197972, 5247465, 6996620, 10494930, 20989860]

約数ペア:

[(1, 20989860), (2, 10494930), (3, 6996620), (4, 5247465), (5, 4197972), (6, 3498310), (10, 2098986), (12, 1749155), (15, 1399324), (20, 1049493), (30, 699662), (60, 349831)]