21715743

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12498657

約数列:

[1, 3, 7, 21, 53, 109, 159, 179, 327, 371, 537, 763, 1113, 1253, 2289, 3759, 5777, 9487, 17331, 19511, 28461, 40439, 58533, 66409, 121317, 136577, 199227, 409731, 1034083, 3102249, 7238581, 21715743]

約数ペア:

[(1, 21715743), (3, 7238581), (7, 3102249), (21, 1034083), (53, 409731), (109, 199227), (159, 136577), (179, 121317), (327, 66409), (371, 58533), (537, 40439), (763, 28461), (1113, 19511), (1253, 17331), (2289, 9487), (3759, 5777)]