12980121

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{677}}^1$

素因数の和:781

約数の個数: 32

約数和(自身を含む): 21869568

約数和(自身を除く): 8889447

約数列:

[1, 3, 7, 11, 21, 33, 77, 83, 231, 249, 581, 677, 913, 1743, 2031, 2739, 4739, 6391, 7447, 14217, 19173, 22341, 52129, 56191, 156387, 168573, 393337, 618101, 1180011, 1854303, 4326707, 12980121]

約数ペア:

[(1, 12980121), (3, 4326707), (7, 1854303), (11, 1180011), (21, 618101), (33, 393337), (77, 168573), (83, 156387), (231, 56191), (249, 52129), (581, 22341), (677, 19173), (913, 14217), (1743, 7447), (2031, 6391), (2739, 4739)]