21000480678

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{2039}}^1\times {\mathrm{8059}}^1$

素因数の和:10177

約数の個数: 48

約数和(自身を含む): 46170259200

約数和(自身を除く): 25169778522

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 2039, 4078, 6117, 8059, 12234, 16118, 18351, 24177, 36702, 48354, 72531, 144769, 145062, 289538, 434307, 572189, 868614, 1144378, 1302921, 1716567, 2605842, 3433134, 5149701, 10299402, 16432301, 32864602, 49296903, 98593806, 147890709, 295781418, 1166693371, 2333386742, 3500080113, 7000160226, 10500240339, 21000480678]

約数ペア:

[(1, 21000480678), (2, 10500240339), (3, 7000160226), (6, 3500080113), (9, 2333386742), (18, 1166693371), (71, 295781418), (142, 147890709), (213, 98593806), (426, 49296903), (639, 32864602), (1278, 16432301), (2039, 10299402), (4078, 5149701), (6117, 3433134), (8059, 2605842), (12234, 1716567), (16118, 1302921), (18351, 1144378), (24177, 868614), (36702, 572189), (48354, 434307), (72531, 289538), (144769, 145062)]