6646780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{241}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 16099776

約数和(自身を除く): 9452996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 241, 394, 482, 788, 964, 985, 1205, 1379, 1687, 1970, 2410, 2758, 3374, 3940, 4820, 5516, 6748, 6895, 8435, 13790, 16870, 27580, 33740, 47477, 94954, 189908, 237385, 332339, 474770, 664678, 949540, 1329356, 1661695, 3323390, 6646780]

約数ペア:

[(1, 6646780), (2, 3323390), (4, 1661695), (5, 1329356), (7, 949540), (10, 664678), (14, 474770), (20, 332339), (28, 237385), (35, 189908), (70, 94954), (140, 47477), (197, 33740), (241, 27580), (394, 16870), (482, 13790), (788, 8435), (964, 6895), (985, 6748), (1205, 5516), (1379, 4820), (1687, 3940), (1970, 3374), (2410, 2758)]