20005129599

素因数分解:

$3^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{213641}}^1$

素因数の和:213685

約数の個数: 40

約数和(自身を含む): 33511029552

約数和(自身を除く): 13505899953

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1911, 2401, 4459, 7203, 13377, 31213, 93639, 213641, 640923, 1495487, 2777333, 4486461, 8331999, 10468409, 19441331, 31405227, 58323993, 73278863, 136089317, 219836589, 408267951, 512952041, 952625219, 1538856123, 2857875657, 6668376533, 20005129599]

約数ペア:

[(1, 20005129599), (3, 6668376533), (7, 2857875657), (13, 1538856123), (21, 952625219), (39, 512952041), (49, 408267951), (91, 219836589), (147, 136089317), (273, 73278863), (343, 58323993), (637, 31405227), (1029, 19441331), (1911, 10468409), (2401, 8331999), (4459, 4486461), (7203, 2777333), (13377, 1495487), (31213, 640923), (93639, 213641)]