221528657

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 285912000

約数和(自身を除く): 64383343

約数列:

[1, 7, 19, 37, 49, 59, 109, 133, 259, 413, 703, 763, 931, 1121, 1813, 2071, 2183, 2891, 4033, 4921, 5341, 6431, 7847, 14497, 15281, 28231, 34447, 41477, 45017, 54929, 76627, 101479, 106967, 122189, 197617, 237947, 290339, 315119, 536389, 855323, 1665629, 2032373, 3754723, 4520993, 5987261, 11659403, 31646951, 221528657]

約数ペア:

[(1, 221528657), (7, 31646951), (19, 11659403), (37, 5987261), (49, 4520993), (59, 3754723), (109, 2032373), (133, 1665629), (259, 855323), (413, 536389), (703, 315119), (763, 290339), (931, 237947), (1121, 197617), (1813, 122189), (2071, 106967), (2183, 101479), (2891, 76627), (4033, 54929), (4921, 45017), (5341, 41477), (6431, 34447), (7847, 28231), (14497, 15281)]