19909511

素因数分解:

${\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{421}}^1$

素因数の和:590

約数の個数: 12

約数和(自身を含む): 21223224

約数和(自身を除く): 1313713

約数列:

[1, 19, 131, 361, 421, 2489, 7999, 47291, 55151, 151981, 1047869, 19909511]

約数ペア:

[(1, 19909511), (19, 1047869), (131, 151981), (361, 55151), (421, 47291), (2489, 7999)]