21282387

素因数分解:

$3^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{2081}}^1$

素因数の和:2578

約数の個数: 16

約数和(自身を含む): 32512512

約数和(自身を除く): 11230125

約数列:

[1, 3, 7, 21, 487, 1461, 2081, 3409, 6243, 10227, 14567, 43701, 1013447, 3040341, 7094129, 21282387]

約数ペア:

[(1, 21282387), (3, 7094129), (7, 3040341), (21, 1013447), (487, 43701), (1461, 14567), (2081, 10227), (3409, 6243)]