19656007

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{163}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 24230016

約数和(自身を除く): 4574009

約数列:

[1, 7, 23, 49, 107, 161, 163, 749, 1127, 1141, 2461, 3749, 5243, 7987, 17227, 17441, 26243, 120589, 122087, 183701, 401143, 854609, 2808001, 19656007]

約数ペア:

[(1, 19656007), (7, 2808001), (23, 854609), (49, 401143), (107, 183701), (161, 122087), (163, 120589), (749, 26243), (1127, 17441), (1141, 17227), (2461, 7987), (3749, 5243)]