20967987

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{3001}}^1$

素因数の和:3158

約数の個数: 16

約数和(自身を含む): 29827872

約数和(自身を除く): 8859885

約数列:

[1, 3, 17, 51, 137, 411, 2329, 3001, 6987, 9003, 51017, 153051, 411137, 1233411, 6989329, 20967987]

約数ペア:

[(1, 20967987), (3, 6989329), (17, 1233411), (51, 411137), (137, 153051), (411, 51017), (2329, 9003), (3001, 6987)]