121778881

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:533

約数の個数: 24

約数和(自身を含む): 147504192

約数和(自身を除く): 25725311

約数列:

[1, 7, 31, 43, 217, 301, 421, 961, 1333, 2947, 6727, 9331, 13051, 18103, 41323, 91357, 126721, 289261, 404581, 561193, 2832067, 3928351, 17396983, 121778881]

約数ペア:

[(1, 121778881), (7, 17396983), (31, 3928351), (43, 2832067), (217, 561193), (301, 404581), (421, 289261), (961, 126721), (1333, 91357), (2947, 41323), (6727, 18103), (9331, 13051)]