20502561

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{5507}}^1$

素因数の和:5600

約数の個数: 16

約数和(自身を含む): 29346624

約数和(自身を除く): 8844063

約数列:

[1, 3, 17, 51, 73, 219, 1241, 3723, 5507, 16521, 93619, 280857, 402011, 1206033, 6834187, 20502561]

約数ペア:

[(1, 20502561), (3, 6834187), (17, 1206033), (51, 402011), (73, 280857), (219, 93619), (1241, 16521), (3723, 5507)]