12721885

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{739}}^1$

素因数の和:1068

約数の個数: 16

約数和(自身を含む): 16729920

約数和(自身を除く): 4008035

約数列:

[1, 5, 11, 55, 313, 739, 1565, 3443, 3695, 8129, 17215, 40645, 231307, 1156535, 2544377, 12721885]

約数ペア:

[(1, 12721885), (5, 2544377), (11, 1156535), (55, 231307), (313, 40645), (739, 17215), (1565, 8129), (3443, 3695)]