12891557

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 16115040

約数和(自身を除く): 3223483

約数列:

[1, 7, 19, 49, 61, 133, 227, 427, 931, 1159, 1589, 2989, 4313, 8113, 11123, 13847, 30191, 56791, 96929, 211337, 263093, 678503, 1841651, 12891557]

約数ペア:

[(1, 12891557), (7, 1841651), (19, 678503), (49, 263093), (61, 211337), (133, 96929), (227, 56791), (427, 30191), (931, 13847), (1159, 11123), (1589, 8113), (2989, 4313)]