201640005

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{640127}}^1$

素因数の和:640145

約数の個数: 24

約数和(自身を含む): 399439872

約数和(自身を除く): 197799867

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 640127, 1920381, 3200635, 4480889, 5761143, 9601905, 13442667, 22404445, 28805715, 40328001, 67213335, 201640005]

約数ペア:

[(1, 201640005), (3, 67213335), (5, 40328001), (7, 28805715), (9, 22404445), (15, 13442667), (21, 9601905), (35, 5761143), (45, 4480889), (63, 3200635), (105, 1920381), (315, 640127)]