21379743

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30851}}^1$

素因数の和:30875

約数の個数: 24

約数和(自身を含む): 38503296

約数和(自身を除く): 17123553

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30851, 92553, 215957, 277659, 339361, 647871, 1018083, 1943613, 2375527, 3054249, 7126581, 21379743]

約数ペア:

[(1, 21379743), (3, 7126581), (7, 3054249), (9, 2375527), (11, 1943613), (21, 1018083), (33, 647871), (63, 339361), (77, 277659), (99, 215957), (231, 92553), (693, 30851)]