221704791

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{87251}}^1$

素因数の和:87283

約数の個数: 24

約数和(自身を含む): 371344512

約数和(自身を除く): 149639721

約数列:

[1, 3, 7, 11, 21, 33, 77, 121, 231, 363, 847, 2541, 87251, 261753, 610757, 959761, 1832271, 2879283, 6718327, 10557371, 20154981, 31672113, 73901597, 221704791]

約数ペア:

[(1, 221704791), (3, 73901597), (7, 31672113), (11, 20154981), (21, 10557371), (33, 6718327), (77, 2879283), (121, 1832271), (231, 959761), (363, 610757), (847, 261753), (2541, 87251)]