20943951

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7853}}^1$

素因数の和:7990

約数の個数: 16

約数和(自身を含む): 32169984

約数和(自身を除く): 11226033

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 7853, 23559, 54971, 164913, 997331, 2991993, 6981317, 20943951]

約数ペア:

[(1, 20943951), (3, 6981317), (7, 2991993), (21, 997331), (127, 164913), (381, 54971), (889, 23559), (2667, 7853)]