28257213

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1$

素因数の和:405

約数の個数: 32

約数和(自身を含む): 41997312

約数和(自身を除く): 13740099

約数列:

[1, 3, 17, 31, 51, 61, 93, 183, 293, 527, 879, 1037, 1581, 1891, 3111, 4981, 5673, 9083, 14943, 17873, 27249, 32147, 53619, 96441, 154411, 303841, 463233, 554063, 911523, 1662189, 9419071, 28257213]

約数ペア:

[(1, 28257213), (3, 9419071), (17, 1662189), (31, 911523), (51, 554063), (61, 463233), (93, 303841), (183, 154411), (293, 96441), (527, 53619), (879, 32147), (1037, 27249), (1581, 17873), (1891, 14943), (3111, 9083), (4981, 5673)]