20856521

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{431}}^1$

素因数の和:692

約数の個数: 16

約数和(自身を含む): 24772608

約数和(自身を除く): 3916087

約数列:

[1, 7, 31, 217, 223, 431, 1561, 3017, 6913, 13361, 48391, 93527, 96113, 672791, 2979503, 20856521]

約数ペア:

[(1, 20856521), (7, 2979503), (31, 672791), (217, 96113), (223, 93527), (431, 48391), (1561, 13361), (3017, 6913)]