19544987

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^2\times {\mathrm{151}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 25142016

約数和(自身を除く): 5597029

約数列:

[1, 7, 11, 41, 77, 151, 287, 451, 1057, 1661, 1681, 3157, 6191, 11627, 11767, 18491, 43337, 68101, 129437, 253831, 476707, 1776817, 2792141, 19544987]

約数ペア:

[(1, 19544987), (7, 2792141), (11, 1776817), (41, 476707), (77, 253831), (151, 129437), (287, 68101), (451, 43337), (1057, 18491), (1661, 11767), (1681, 11627), (3157, 6191)]