81211907

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{269}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 102643200

約数和(自身を除く): 21431293

約数列:

[1, 7, 17, 43, 59, 119, 269, 301, 413, 731, 1003, 1883, 2537, 4573, 5117, 7021, 11567, 15871, 17759, 32011, 43129, 80969, 111097, 196639, 269807, 301903, 682453, 1376473, 1888649, 4777171, 11601701, 81211907]

約数ペア:

[(1, 81211907), (7, 11601701), (17, 4777171), (43, 1888649), (59, 1376473), (119, 682453), (269, 301903), (301, 269807), (413, 196639), (731, 111097), (1003, 80969), (1883, 43129), (2537, 32011), (4573, 17759), (5117, 15871), (7021, 11567)]