19540899

素因数分解:

$3^3\times 7^1\times {\mathrm{103391}}^1$

素因数の和:103407

約数の個数: 16

約数和(自身を含む): 33085440

約数和(自身を除く): 13544541

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 103391, 310173, 723737, 930519, 2171211, 2791557, 6513633, 19540899]

約数ペア:

[(1, 19540899), (3, 6513633), (7, 2791557), (9, 2171211), (21, 930519), (27, 723737), (63, 310173), (189, 103391)]