20808459

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19429}}^1$

素因数の和:19459

約数の個数: 24

約数和(自身を含む): 36372960

約数和(自身を除く): 15564501

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19429, 58287, 136003, 174861, 330293, 408009, 990879, 1224027, 2312051, 2972637, 6936153, 20808459]

約数ペア:

[(1, 20808459), (3, 6936153), (7, 2972637), (9, 2312051), (17, 1224027), (21, 990879), (51, 408009), (63, 330293), (119, 174861), (153, 136003), (357, 58287), (1071, 19429)]