19209981

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{19463}}^1$

素因数の和:19520

約数の個数: 16

約数和(自身を含む): 29896704

約数和(自身を除く): 10686723

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 19463, 58389, 136241, 408723, 914761, 2744283, 6403327, 19209981]

約数ペア:

[(1, 19209981), (3, 6403327), (7, 2744283), (21, 914761), (47, 408723), (141, 136241), (329, 58389), (987, 19463)]