28907008

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:175

約数の個数: 80

約数和(自身を含む): 64277136

約数和(自身を除く): 35370128

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 101, 104, 128, 172, 202, 208, 256, 344, 404, 416, 512, 559, 688, 808, 832, 1118, 1313, 1376, 1616, 1664, 2236, 2626, 2752, 3232, 3328, 4343, 4472, 5252, 5504, 6464, 6656, 8686, 8944, 10504, 11008, 12928, 17372, 17888, 21008, 22016, 25856, 34744, 35776, 42016, 51712, 56459, 69488, 71552, 84032, 112918, 138976, 143104, 168064, 225836, 277952, 286208, 336128, 451672, 555904, 672256, 903344, 1111808, 1806688, 2223616, 3613376, 7226752, 14453504, 28907008]

約数ペア:

[(1, 28907008), (2, 14453504), (4, 7226752), (8, 3613376), (13, 2223616), (16, 1806688), (26, 1111808), (32, 903344), (43, 672256), (52, 555904), (64, 451672), (86, 336128), (101, 286208), (104, 277952), (128, 225836), (172, 168064), (202, 143104), (208, 138976), (256, 112918), (344, 84032), (404, 71552), (416, 69488), (512, 56459), (559, 51712), (688, 42016), (808, 35776), (832, 34744), (1118, 25856), (1313, 22016), (1376, 21008), (1616, 17888), (1664, 17372), (2236, 12928), (2626, 11008), (2752, 10504), (3232, 8944), (3328, 8686), (4343, 6656), (4472, 6464), (5252, 5504)]