18877936

素因数分解:

$2^4\times 7^2\times {\mathrm{11}}^2\times {\mathrm{199}}^1$

素因数の和:243

約数の個数: 90

約数和(自身を含む): 47002200

約数和(自身を除く): 28124264

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 49, 56, 77, 88, 98, 112, 121, 154, 176, 196, 199, 242, 308, 392, 398, 484, 539, 616, 784, 796, 847, 968, 1078, 1232, 1393, 1592, 1694, 1936, 2156, 2189, 2786, 3184, 3388, 4312, 4378, 5572, 5929, 6776, 8624, 8756, 9751, 11144, 11858, 13552, 15323, 17512, 19502, 22288, 23716, 24079, 30646, 35024, 39004, 47432, 48158, 61292, 78008, 94864, 96316, 107261, 122584, 156016, 168553, 192632, 214522, 245168, 337106, 385264, 429044, 674212, 858088, 1179871, 1348424, 1716176, 2359742, 2696848, 4719484, 9438968, 18877936]

約数ペア:

[(1, 18877936), (2, 9438968), (4, 4719484), (7, 2696848), (8, 2359742), (11, 1716176), (14, 1348424), (16, 1179871), (22, 858088), (28, 674212), (44, 429044), (49, 385264), (56, 337106), (77, 245168), (88, 214522), (98, 192632), (112, 168553), (121, 156016), (154, 122584), (176, 107261), (196, 96316), (199, 94864), (242, 78008), (308, 61292), (392, 48158), (398, 47432), (484, 39004), (539, 35024), (616, 30646), (784, 24079), (796, 23716), (847, 22288), (968, 19502), (1078, 17512), (1232, 15323), (1393, 13552), (1592, 11858), (1694, 11144), (1936, 9751), (2156, 8756), (2189, 8624), (2786, 6776), (3184, 5929), (3388, 5572), (4312, 4378)]