19885359

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:459

約数の個数: 32

約数和(自身を含む): 30663360

約数和(自身を除く): 10778001

約数列:

[1, 3, 13, 17, 39, 51, 89, 221, 267, 337, 663, 1011, 1157, 1513, 3471, 4381, 4539, 5729, 13143, 17187, 19669, 29993, 59007, 74477, 89979, 223431, 389909, 509881, 1169727, 1529643, 6628453, 19885359]

約数ペア:

[(1, 19885359), (3, 6628453), (13, 1529643), (17, 1169727), (39, 509881), (51, 389909), (89, 223431), (221, 89979), (267, 74477), (337, 59007), (663, 29993), (1011, 19669), (1157, 17187), (1513, 13143), (3471, 5729), (4381, 4539)]