217882819

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{12689}}^1$

素因数の和:12930

約数の個数: 16

約数和(自身を含む): 272885760

約数和(自身を除く): 55002941

約数列:

[1, 7, 11, 77, 223, 1561, 2453, 12689, 17171, 88823, 139579, 977053, 2829647, 19807529, 31126117, 217882819]

約数ペア:

[(1, 217882819), (7, 31126117), (11, 19807529), (77, 2829647), (223, 977053), (1561, 139579), (2453, 88823), (12689, 17171)]