18797980

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2141}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 39584160

約数和(自身を除く): 20786180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2141, 2195, 4282, 4390, 8564, 8780, 10705, 21410, 42820, 939899, 1879798, 3759596, 4699495, 9398990, 18797980]

約数ペア:

[(1, 18797980), (2, 9398990), (4, 4699495), (5, 3759596), (10, 1879798), (20, 939899), (439, 42820), (878, 21410), (1756, 10705), (2141, 8780), (2195, 8564), (4282, 4390)]