21903080

素因数分解:

$2^3\times 5^1\times {\mathrm{547577}}^1$

素因数の和:547588

約数の個数: 16

約数和(自身を含む): 49282020

約数和(自身を除く): 27378940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547577, 1095154, 2190308, 2737885, 4380616, 5475770, 10951540, 21903080]

約数ペア:

[(1, 21903080), (2, 10951540), (4, 5475770), (5, 4380616), (8, 2737885), (10, 2190308), (20, 1095154), (40, 547577)]