131921909

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1\times {\mathrm{1283}}^1$

素因数の和:1724

約数の個数: 16

約数和(自身を含む): 155353728

約数和(自身を除く): 23431819

約数列:

[1, 7, 37, 259, 397, 1283, 2779, 8981, 14689, 47471, 102823, 332297, 509351, 3565457, 18845987, 131921909]

約数ペア:

[(1, 131921909), (7, 18845987), (37, 3565457), (259, 509351), (397, 332297), (1283, 102823), (2779, 47471), (8981, 14689)]