21897916

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{61511}}^1$

素因数の和:61604

約数の個数: 12

約数和(自身を含む): 38752560

約数和(自身を除く): 16854644

約数列:

[1, 2, 4, 89, 178, 356, 61511, 123022, 246044, 5474479, 10948958, 21897916]

約数ペア:

[(1, 21897916), (2, 10948958), (4, 5474479), (89, 246044), (178, 123022), (356, 61511)]