21296968

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^2\times {\mathrm{449}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 51171750

約数和(自身を除く): 29874782

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 121, 154, 196, 242, 308, 392, 449, 484, 539, 616, 847, 898, 968, 1078, 1694, 1796, 2156, 3143, 3388, 3592, 4312, 4939, 5929, 6286, 6776, 9878, 11858, 12572, 19756, 22001, 23716, 25144, 34573, 39512, 44002, 47432, 54329, 69146, 88004, 108658, 138292, 176008, 217316, 242011, 276584, 380303, 434632, 484022, 760606, 968044, 1521212, 1936088, 2662121, 3042424, 5324242, 10648484, 21296968]

約数ペア:

[(1, 21296968), (2, 10648484), (4, 5324242), (7, 3042424), (8, 2662121), (11, 1936088), (14, 1521212), (22, 968044), (28, 760606), (44, 484022), (49, 434632), (56, 380303), (77, 276584), (88, 242011), (98, 217316), (121, 176008), (154, 138292), (196, 108658), (242, 88004), (308, 69146), (392, 54329), (449, 47432), (484, 44002), (539, 39512), (616, 34573), (847, 25144), (898, 23716), (968, 22001), (1078, 19756), (1694, 12572), (1796, 11858), (2156, 9878), (3143, 6776), (3388, 6286), (3592, 5929), (4312, 4939)]