18686143

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{419}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 22417920

約数和(自身を除く): 3731777

約数列:

[1, 7, 23, 161, 277, 419, 1939, 2933, 6371, 9637, 44597, 67459, 116063, 812441, 2669449, 18686143]

約数ペア:

[(1, 18686143), (7, 2669449), (23, 812441), (161, 116063), (277, 67459), (419, 44597), (1939, 9637), (2933, 6371)]