19988021207

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{3467}}^1\times {\mathrm{74873}}^1$

素因数の和:78358

約数の個数: 16

約数和(自身を含む): 24927651072

約数和(自身を除く): 4939629865

約数列:

[1, 7, 11, 77, 3467, 24269, 38137, 74873, 266959, 524111, 823603, 5765221, 259584691, 1817092837, 2855431601, 19988021207]

約数ペア:

[(1, 19988021207), (7, 2855431601), (11, 1817092837), (77, 259584691), (3467, 5765221), (24269, 823603), (38137, 524111), (74873, 266959)]