209550719

素因数分解:

$7^1\times {\mathrm{103}}^1\times {\mathrm{509}}^1\times {\mathrm{571}}^1$

素因数の和:1190

約数の個数: 16

約数和(自身を含む): 242711040

約数和(自身を除く): 33160321

約数列:

[1, 7, 103, 509, 571, 721, 3563, 3997, 52427, 58813, 290639, 366989, 411691, 2034473, 29935817, 209550719]

約数ペア:

[(1, 209550719), (7, 29935817), (103, 2034473), (509, 411691), (571, 366989), (721, 290639), (3563, 58813), (3997, 52427)]