16891371

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1361}}^1$

素因数の和:1571

約数の個数: 24

約数和(自身を含む): 28046304

約数和(自身を除く): 11154933

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1361, 1379, 1773, 4083, 4137, 9527, 12249, 12411, 28581, 85743, 268117, 804351, 1876819, 2413053, 5630457, 16891371]

約数ペア:

[(1, 16891371), (3, 5630457), (7, 2413053), (9, 1876819), (21, 804351), (63, 268117), (197, 85743), (591, 28581), (1361, 12411), (1379, 12249), (1773, 9527), (4083, 4137)]