20985395

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{1033}}^1$

素因数の和:1294

約数の個数: 16

約数和(自身を含む): 26801280

約数和(自身を除く): 5815885

約数列:

[1, 5, 17, 85, 239, 1033, 1195, 4063, 5165, 17561, 20315, 87805, 246887, 1234435, 4197079, 20985395]

約数ペア:

[(1, 20985395), (5, 4197079), (17, 1234435), (85, 246887), (239, 87805), (1033, 20315), (1195, 17561), (4063, 5165)]