21390776

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{243077}}^1$

素因数の和:243094

約数の個数: 16

約数和(自身を含む): 43754040

約数和(自身を除く): 22363264

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 243077, 486154, 972308, 1944616, 2673847, 5347694, 10695388, 21390776]

約数ペア:

[(1, 21390776), (2, 10695388), (4, 5347694), (8, 2673847), (11, 1944616), (22, 972308), (44, 486154), (88, 243077)]