20041880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{7057}}^1$

素因数の和:7139

約数の個数: 32

約数和(自身を含む): 45735840

約数和(自身を除く): 25693960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7057, 14114, 28228, 35285, 56456, 70570, 141140, 282280, 501047, 1002094, 2004188, 2505235, 4008376, 5010470, 10020940, 20041880]

約数ペア:

[(1, 20041880), (2, 10020940), (4, 5010470), (5, 4008376), (8, 2505235), (10, 2004188), (20, 1002094), (40, 501047), (71, 282280), (142, 141140), (284, 70570), (355, 56456), (568, 35285), (710, 28228), (1420, 14114), (2840, 7057)]