21391093

素因数分解:

${\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:348

約数の個数: 16

約数和(自身を含む): 23207040

約数和(自身を除く): 1815947

約数列:

[1, 19, 71, 101, 157, 1349, 1919, 2983, 7171, 11147, 15857, 136249, 211793, 301283, 1125847, 21391093]

約数ペア:

[(1, 21391093), (19, 1125847), (71, 301283), (101, 211793), (157, 136249), (1349, 15857), (1919, 11147), (2983, 7171)]