211718521

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1\times {\mathrm{1361}}^1$

素因数の和:1752

約数の個数: 16

約数和(自身を含む): 246336768

約数和(自身を除く): 34618247

約数列:

[1, 7, 71, 313, 497, 1361, 2191, 9527, 22223, 96631, 155561, 425993, 676417, 2981951, 30245503, 211718521]

約数ペア:

[(1, 211718521), (7, 30245503), (71, 2981951), (313, 676417), (497, 425993), (1361, 155561), (2191, 96631), (9527, 22223)]