19498871

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{431}}^1$

素因数の和:742

約数の個数: 16

約数和(自身を含む): 23390208

約数和(自身を除く): 3891337

約数列:

[1, 7, 23, 161, 281, 431, 1967, 3017, 6463, 9913, 45241, 69391, 121111, 847777, 2785553, 19498871]

約数ペア:

[(1, 19498871), (7, 2785553), (23, 847777), (161, 121111), (281, 69391), (431, 45241), (1967, 9913), (3017, 6463)]