20178319

素因数分解:

$7^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:594

約数の個数: 16

約数和(自身を含む): 23727168

約数和(自身を除く): 3548849

約数列:

[1, 7, 53, 137, 371, 397, 959, 2779, 7261, 21041, 50827, 54389, 147287, 380723, 2882617, 20178319]

約数ペア:

[(1, 20178319), (7, 2882617), (53, 380723), (137, 147287), (371, 54389), (397, 50827), (959, 21041), (2779, 7261)]