20180888

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1459}}^1$

素因数の和:1504

約数の個数: 64

約数和(自身を含む): 49056000

約数和(自身を除く): 28875112

約数列:

[1, 2, 4, 7, 8, 13, 14, 19, 26, 28, 38, 52, 56, 76, 91, 104, 133, 152, 182, 247, 266, 364, 494, 532, 728, 988, 1064, 1459, 1729, 1976, 2918, 3458, 5836, 6916, 10213, 11672, 13832, 18967, 20426, 27721, 37934, 40852, 55442, 75868, 81704, 110884, 132769, 151736, 194047, 221768, 265538, 360373, 388094, 531076, 720746, 776188, 1062152, 1441492, 1552376, 2522611, 2882984, 5045222, 10090444, 20180888]

約数ペア:

[(1, 20180888), (2, 10090444), (4, 5045222), (7, 2882984), (8, 2522611), (13, 1552376), (14, 1441492), (19, 1062152), (26, 776188), (28, 720746), (38, 531076), (52, 388094), (56, 360373), (76, 265538), (91, 221768), (104, 194047), (133, 151736), (152, 132769), (182, 110884), (247, 81704), (266, 75868), (364, 55442), (494, 40852), (532, 37934), (728, 27721), (988, 20426), (1064, 18967), (1459, 13832), (1729, 11672), (1976, 10213), (2918, 6916), (3458, 5836)]