20013371

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 23647680

約数和(自身を除く): 3634309

約数列:

[1, 7, 41, 137, 287, 509, 959, 3563, 5617, 20869, 39319, 69733, 146083, 488131, 2859053, 20013371]

約数ペア:

[(1, 20013371), (7, 2859053), (41, 488131), (137, 146083), (287, 69733), (509, 39319), (959, 20869), (3563, 5617)]