19909641

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{1031}}^1$

素因数の和:1232

約数の個数: 16

約数和(自身を含む): 27393408

約数和(自身を除く): 7483767

約数列:

[1, 3, 41, 123, 157, 471, 1031, 3093, 6437, 19311, 42271, 126813, 161867, 485601, 6636547, 19909641]

約数ペア:

[(1, 19909641), (3, 6636547), (41, 485601), (123, 161867), (157, 126813), (471, 42271), (1031, 19311), (3093, 6437)]