21403910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{194581}}^1$

素因数の和:194599

約数の個数: 16

約数和(自身を含む): 42029712

約数和(自身を除く): 20625802

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 194581, 389162, 972905, 1945810, 2140391, 4280782, 10701955, 21403910]

約数ペア:

[(1, 21403910), (2, 10701955), (5, 4280782), (10, 2140391), (11, 1945810), (22, 972905), (55, 389162), (110, 194581)]