20959744

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:145

約数の個数: 80

約数和(自身を含む): 46747008

約数和(自身を除く): 25787264

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 67, 94, 104, 128, 134, 188, 208, 256, 268, 376, 416, 512, 536, 611, 752, 832, 871, 1072, 1222, 1504, 1664, 1742, 2144, 2444, 3008, 3149, 3328, 3484, 4288, 4888, 6016, 6298, 6656, 6968, 8576, 9776, 12032, 12596, 13936, 17152, 19552, 24064, 25192, 27872, 34304, 39104, 40937, 50384, 55744, 78208, 81874, 100768, 111488, 156416, 163748, 201536, 222976, 312832, 327496, 403072, 445952, 654992, 806144, 1309984, 1612288, 2619968, 5239936, 10479872, 20959744]

約数ペア:

[(1, 20959744), (2, 10479872), (4, 5239936), (8, 2619968), (13, 1612288), (16, 1309984), (26, 806144), (32, 654992), (47, 445952), (52, 403072), (64, 327496), (67, 312832), (94, 222976), (104, 201536), (128, 163748), (134, 156416), (188, 111488), (208, 100768), (256, 81874), (268, 78208), (376, 55744), (416, 50384), (512, 40937), (536, 39104), (611, 34304), (752, 27872), (832, 25192), (871, 24064), (1072, 19552), (1222, 17152), (1504, 13936), (1664, 12596), (1742, 12032), (2144, 9776), (2444, 8576), (3008, 6968), (3149, 6656), (3328, 6298), (3484, 6016), (4288, 4888)]