2639709

素因数分解:

$3^7\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:109

約数の個数: 32

約数和(自身を含む): 4250880

約数和(自身を除く): 1611171

約数列:

[1, 3, 9, 17, 27, 51, 71, 81, 153, 213, 243, 459, 639, 729, 1207, 1377, 1917, 2187, 3621, 4131, 5751, 10863, 12393, 17253, 32589, 37179, 51759, 97767, 155277, 293301, 879903, 2639709]

約数ペア:

[(1, 2639709), (3, 879903), (9, 293301), (17, 155277), (27, 97767), (51, 51759), (71, 37179), (81, 32589), (153, 17253), (213, 12393), (243, 10863), (459, 5751), (639, 4131), (729, 3621), (1207, 2187), (1377, 1917)]