21981449

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{499}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 27360000

約数和(自身を除く): 5378551

約数列:

[1, 7, 29, 31, 49, 203, 217, 499, 899, 1421, 1519, 3493, 6293, 14471, 15469, 24451, 44051, 101297, 108283, 448601, 709079, 757981, 3140207, 21981449]

約数ペア:

[(1, 21981449), (7, 3140207), (29, 757981), (31, 709079), (49, 448601), (203, 108283), (217, 101297), (499, 44051), (899, 24451), (1421, 15469), (1519, 14471), (3493, 6293)]