20688255

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{65677}}^1$

素因数の和:65695

約数の個数: 24

約数和(自身を含む): 40983072

約数和(自身を除く): 20294817

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 65677, 197031, 328385, 459739, 591093, 985155, 1379217, 2298695, 2955465, 4137651, 6896085, 20688255]

約数ペア:

[(1, 20688255), (3, 6896085), (5, 4137651), (7, 2955465), (9, 2298695), (15, 1379217), (21, 985155), (35, 591093), (45, 459739), (63, 328385), (105, 197031), (315, 65677)]