20671281

素因数分解:

$3^5\times {\mathrm{257}}^1\times {\mathrm{331}}^1$

素因数の和:603

約数の個数: 24

約数和(自身を含む): 31178784

約数和(自身を除く): 10507503

約数列:

[1, 3, 9, 27, 81, 243, 257, 331, 771, 993, 2313, 2979, 6939, 8937, 20817, 26811, 62451, 80433, 85067, 255201, 765603, 2296809, 6890427, 20671281]

約数ペア:

[(1, 20671281), (3, 6890427), (9, 2296809), (27, 765603), (81, 255201), (243, 85067), (257, 80433), (331, 62451), (771, 26811), (993, 20817), (2313, 8937), (2979, 6939)]