20417427

素因数分解:

$3^4\times {\mathrm{443}}^1\times {\mathrm{569}}^1$

素因数の和:1024

約数の個数: 20

約数和(自身を含む): 30622680

約数和(自身を除く): 10205253

約数列:

[1, 3, 9, 27, 81, 443, 569, 1329, 1707, 3987, 5121, 11961, 15363, 35883, 46089, 252067, 756201, 2268603, 6805809, 20417427]

約数ペア:

[(1, 20417427), (3, 6805809), (9, 2268603), (27, 756201), (81, 252067), (443, 46089), (569, 35883), (1329, 15363), (1707, 11961), (3987, 5121)]