21378660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{356311}}^1$

素因数の和:356323

約数の個数: 24

約数和(自身を含む): 59860416

約数和(自身を除く): 38481756

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 356311, 712622, 1068933, 1425244, 1781555, 2137866, 3563110, 4275732, 5344665, 7126220, 10689330, 21378660]

約数ペア:

[(1, 21378660), (2, 10689330), (3, 7126220), (4, 5344665), (5, 4275732), (6, 3563110), (10, 2137866), (12, 1781555), (15, 1425244), (20, 1068933), (30, 712622), (60, 356311)]