18918874

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{223}}^1\times {\mathrm{251}}^1$

素因数の和:502

約数の個数: 24

約数和(自身を含む): 30989952

約数和(自身を除く): 12071078

約数列:

[1, 2, 13, 26, 169, 223, 251, 338, 446, 502, 2899, 3263, 5798, 6526, 37687, 42419, 55973, 75374, 84838, 111946, 727649, 1455298, 9459437, 18918874]

約数ペア:

[(1, 18918874), (2, 9459437), (13, 1455298), (26, 727649), (169, 111946), (223, 84838), (251, 75374), (338, 55973), (446, 42419), (502, 37687), (2899, 6526), (3263, 5798)]