12217940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{443}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 29538432

約数和(自身を除く): 17320492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 197, 394, 443, 788, 886, 985, 1379, 1772, 1970, 2215, 2758, 3101, 3940, 4430, 5516, 6202, 6895, 8860, 12404, 13790, 15505, 27580, 31010, 62020, 87271, 174542, 349084, 436355, 610897, 872710, 1221794, 1745420, 2443588, 3054485, 6108970, 12217940]

約数ペア:

[(1, 12217940), (2, 6108970), (4, 3054485), (5, 2443588), (7, 1745420), (10, 1221794), (14, 872710), (20, 610897), (28, 436355), (35, 349084), (70, 174542), (140, 87271), (197, 62020), (394, 31010), (443, 27580), (788, 15505), (886, 13790), (985, 12404), (1379, 8860), (1772, 6895), (1970, 6202), (2215, 5516), (2758, 4430), (3101, 3940)]