21921361

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{9817}}^1$

素因数の和:9864

約数の個数: 16

約数和(自身を含む): 28275840

約数和(自身を除く): 6354479

約数列:

[1, 7, 11, 29, 77, 203, 319, 2233, 9817, 68719, 107987, 284693, 755909, 1992851, 3131623, 21921361]

約数ペア:

[(1, 21921361), (7, 3131623), (11, 1992851), (29, 755909), (77, 284693), (203, 107987), (319, 68719), (2233, 9817)]