21151886

素因数分解:

$2^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 37255680

約数和(自身を除く): 16103794

約数列:

[1, 2, 7, 14, 83, 109, 166, 167, 218, 334, 581, 763, 1162, 1169, 1526, 2338, 9047, 13861, 18094, 18203, 27722, 36406, 63329, 97027, 126658, 127421, 194054, 254842, 1510849, 3021698, 10575943, 21151886]

約数ペア:

[(1, 21151886), (2, 10575943), (7, 3021698), (14, 1510849), (83, 254842), (109, 194054), (166, 127421), (167, 126658), (218, 97027), (334, 63329), (581, 36406), (763, 27722), (1162, 18203), (1169, 18094), (1526, 13861), (2338, 9047)]