18183946

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:390

約数の個数: 32

約数和(自身を含む): 31026240

約数和(自身を除く): 12842294

約数列:

[1, 2, 11, 22, 37, 74, 89, 178, 251, 407, 502, 814, 979, 1958, 2761, 3293, 5522, 6586, 9287, 18574, 22339, 36223, 44678, 72446, 102157, 204314, 245729, 491458, 826543, 1653086, 9091973, 18183946]

約数ペア:

[(1, 18183946), (2, 9091973), (11, 1653086), (22, 826543), (37, 491458), (74, 245729), (89, 204314), (178, 102157), (251, 72446), (407, 44678), (502, 36223), (814, 22339), (979, 18574), (1958, 9287), (2761, 6586), (3293, 5522)]