19959995

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{6151}}^1$

素因数の和:6226

約数の個数: 16

約数和(自身を含む): 26576640

約数和(自身を除く): 6616645

約数列:

[1, 5, 11, 55, 59, 295, 649, 3245, 6151, 30755, 67661, 338305, 362909, 1814545, 3991999, 19959995]

約数ペア:

[(1, 19959995), (5, 3991999), (11, 1814545), (55, 362909), (59, 338305), (295, 67661), (649, 30755), (3245, 6151)]