221666816

素因数分解:

$2^9\times 7^1\times {\mathrm{127}}^1\times {\mathrm{487}}^1$

素因数の和:639

約数の個数: 80

約数和(自身を含む): 511205376

約数和(自身を除く): 289538560

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 127, 128, 224, 254, 256, 448, 487, 508, 512, 889, 896, 974, 1016, 1778, 1792, 1948, 2032, 3409, 3556, 3584, 3896, 4064, 6818, 7112, 7792, 8128, 13636, 14224, 15584, 16256, 27272, 28448, 31168, 32512, 54544, 56896, 61849, 62336, 65024, 109088, 113792, 123698, 124672, 218176, 227584, 247396, 249344, 432943, 436352, 455168, 494792, 865886, 872704, 989584, 1731772, 1745408, 1979168, 3463544, 3958336, 6927088, 7916672, 13854176, 15833344, 27708352, 31666688, 55416704, 110833408, 221666816]

約数ペア:

[(1, 221666816), (2, 110833408), (4, 55416704), (7, 31666688), (8, 27708352), (14, 15833344), (16, 13854176), (28, 7916672), (32, 6927088), (56, 3958336), (64, 3463544), (112, 1979168), (127, 1745408), (128, 1731772), (224, 989584), (254, 872704), (256, 865886), (448, 494792), (487, 455168), (508, 436352), (512, 432943), (889, 249344), (896, 247396), (974, 227584), (1016, 218176), (1778, 124672), (1792, 123698), (1948, 113792), (2032, 109088), (3409, 65024), (3556, 62336), (3584, 61849), (3896, 56896), (4064, 54544), (6818, 32512), (7112, 31168), (7792, 28448), (8128, 27272), (13636, 16256), (14224, 15584)]