20781856

素因数分解:

$2^5\times {\mathrm{89}}^1\times {\mathrm{7297}}^1$

素因数の和:7396

約数の個数: 24

約数和(自身を含む): 41379660

約数和(自身を除く): 20597804

約数列:

[1, 2, 4, 8, 16, 32, 89, 178, 356, 712, 1424, 2848, 7297, 14594, 29188, 58376, 116752, 233504, 649433, 1298866, 2597732, 5195464, 10390928, 20781856]

約数ペア:

[(1, 20781856), (2, 10390928), (4, 5195464), (8, 2597732), (16, 1298866), (32, 649433), (89, 233504), (178, 116752), (356, 58376), (712, 29188), (1424, 14594), (2848, 7297)]