21084777

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19687}}^1$

素因数の和:19717

約数の個数: 24

約数和(自身を含む): 36855936

約数和(自身を除く): 15771159

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19687, 59061, 137809, 177183, 334679, 413427, 1004037, 1240281, 2342753, 3012111, 7028259, 21084777]

約数ペア:

[(1, 21084777), (3, 7028259), (7, 3012111), (9, 2342753), (17, 1240281), (21, 1004037), (51, 413427), (63, 334679), (119, 177183), (153, 137809), (357, 59061), (1071, 19687)]