21784105

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{27061}}^1$

素因数の和:27096

約数の個数: 16

約数和(自身を含む): 31175424

約数和(自身を除く): 9391319

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 27061, 135305, 189427, 622403, 947135, 3112015, 4356821, 21784105]

約数ペア:

[(1, 21784105), (5, 4356821), (7, 3112015), (23, 947135), (35, 622403), (115, 189427), (161, 135305), (805, 27061)]