20648565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65551}}^1$

素因数の和:65569

約数の個数: 24

約数和(自身を含む): 40904448

約数和(自身を除く): 20255883

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65551, 196653, 327755, 458857, 589959, 983265, 1376571, 2294285, 2949795, 4129713, 6882855, 20648565]

約数ペア:

[(1, 20648565), (3, 6882855), (5, 4129713), (7, 2949795), (9, 2294285), (15, 1376571), (21, 983265), (35, 589959), (45, 458857), (63, 327755), (105, 196653), (315, 65551)]