21086451

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{173}}^1\times {\mathrm{467}}^1$

素因数の和:675

約数の個数: 24

約数和(自身を含む): 31758480

約数和(自身を除く): 10672029

約数列:

[1, 3, 9, 29, 87, 173, 261, 467, 519, 1401, 1557, 4203, 5017, 13543, 15051, 40629, 45153, 80791, 121887, 242373, 727119, 2342939, 7028817, 21086451]

約数ペア:

[(1, 21086451), (3, 7028817), (9, 2342939), (29, 727119), (87, 242373), (173, 121887), (261, 80791), (467, 45153), (519, 40629), (1401, 15051), (1557, 13543), (4203, 5017)]