19664701

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{1823}}^1$

素因数の和:1920

約数の個数: 16

約数和(自身を含む): 23814144

約数和(自身を除く): 4149443

約数列:

[1, 7, 23, 67, 161, 469, 1541, 1823, 10787, 12761, 41929, 122141, 293503, 854987, 2809243, 19664701]

約数ペア:

[(1, 19664701), (7, 2809243), (23, 854987), (67, 293503), (161, 122141), (469, 41929), (1541, 12761), (1823, 10787)]