217640918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{71171}}^1$

素因数の和:71323

約数の個数: 16

約数和(自身を含む): 358706880

約数和(自身を除く): 141065962

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 71171, 142342, 782881, 1565762, 9892769, 19785538, 108820459, 217640918]

約数ペア:

[(1, 217640918), (2, 108820459), (11, 19785538), (22, 9892769), (139, 1565762), (278, 782881), (1529, 142342), (3058, 71171)]