21010540

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2393}}^1$

素因数の和:2841

約数の個数: 24

約数和(自身を含む): 44241120

約数和(自身を除く): 23230580

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 2393, 4390, 4786, 8780, 9572, 11965, 23930, 47860, 1050527, 2101054, 4202108, 5252635, 10505270, 21010540]

約数ペア:

[(1, 21010540), (2, 10505270), (4, 5252635), (5, 4202108), (10, 2101054), (20, 1050527), (439, 47860), (878, 23930), (1756, 11965), (2195, 9572), (2393, 8780), (4390, 4786)]