21138660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117437}}^1$

素因数の和:117452

約数の個数: 36

約数和(自身を含む): 64121148

約数和(自身を除く): 42982488

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117437, 234874, 352311, 469748, 587185, 704622, 1056933, 1174370, 1409244, 1761555, 2113866, 2348740, 3523110, 4227732, 5284665, 7046220, 10569330, 21138660]

約数ペア:

[(1, 21138660), (2, 10569330), (3, 7046220), (4, 5284665), (5, 4227732), (6, 3523110), (9, 2348740), (10, 2113866), (12, 1761555), (15, 1409244), (18, 1174370), (20, 1056933), (30, 704622), (36, 587185), (45, 469748), (60, 352311), (90, 234874), (180, 117437)]