638871794

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{86171}}^1$

素因数の和:86521

約数の個数: 16

約数和(自身を含む): 1048540896

約数和(自身を除く): 409669102

約数列:

[1, 2, 11, 22, 337, 674, 3707, 7414, 86171, 172342, 947881, 1895762, 29039627, 58079254, 319435897, 638871794]

約数ペア:

[(1, 638871794), (2, 319435897), (11, 58079254), (22, 29039627), (337, 1895762), (674, 947881), (3707, 172342), (7414, 86171)]