21000580

素因数分解:

$2^2\times 5^1\times {\mathrm{709}}^1\times {\mathrm{1481}}^1$

素因数の和:2199

約数の個数: 24

約数和(自身を含む): 44193240

約数和(自身を除く): 23192660

約数列:

[1, 2, 4, 5, 10, 20, 709, 1418, 1481, 2836, 2962, 3545, 5924, 7090, 7405, 14180, 14810, 29620, 1050029, 2100058, 4200116, 5250145, 10500290, 21000580]

約数ペア:

[(1, 21000580), (2, 10500290), (4, 5250145), (5, 4200116), (10, 2100058), (20, 1050029), (709, 29620), (1418, 14810), (1481, 14180), (2836, 7405), (2962, 7090), (3545, 5924)]