21206138

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:290

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13464454

約数列:

[1, 2, 23, 43, 46, 71, 86, 142, 151, 302, 989, 1633, 1978, 3053, 3266, 3473, 6106, 6493, 6946, 10721, 12986, 21442, 70219, 140438, 149339, 246583, 298678, 461003, 493166, 922006, 10603069, 21206138]

約数ペア:

[(1, 21206138), (2, 10603069), (23, 922006), (43, 493166), (46, 461003), (71, 298678), (86, 246583), (142, 149339), (151, 140438), (302, 70219), (989, 21442), (1633, 12986), (1978, 10721), (3053, 6946), (3266, 6493), (3473, 6106)]