138972407

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{2543}}^1$

素因数の和:2798

約数の個数: 16

約数和(自身を含む): 163955712

約数和(自身を除く): 24983305

約数列:

[1, 7, 37, 211, 259, 1477, 2543, 7807, 17801, 54649, 94091, 536573, 658637, 3756011, 19853201, 138972407]

約数ペア:

[(1, 138972407), (7, 19853201), (37, 3756011), (211, 658637), (259, 536573), (1477, 94091), (2543, 54649), (7807, 17801)]