19739905

素因数分解:

$5^1\times {\mathrm{61}}^2\times {\mathrm{1061}}^1$

素因数の和:1188

約数の個数: 12

約数和(自身を含む): 24105276

約数和(自身を除く): 4365371

約数列:

[1, 5, 61, 305, 1061, 3721, 5305, 18605, 64721, 323605, 3947981, 19739905]

約数ペア:

[(1, 19739905), (5, 3947981), (61, 323605), (305, 64721), (1061, 18605), (3721, 5305)]