65821780

素因数分解:

$2^2\times 5^1\times {\mathrm{1759}}^1\times {\mathrm{1871}}^1$

素因数の和:3639

約数の個数: 24

約数和(自身を含む): 138378240

約数和(自身を除く): 72556460

約数列:

[1, 2, 4, 5, 10, 20, 1759, 1871, 3518, 3742, 7036, 7484, 8795, 9355, 17590, 18710, 35180, 37420, 3291089, 6582178, 13164356, 16455445, 32910890, 65821780]

約数ペア:

[(1, 65821780), (2, 32910890), (4, 16455445), (5, 13164356), (10, 6582178), (20, 3291089), (1759, 37420), (1871, 35180), (3518, 18710), (3742, 17590), (7036, 9355), (7484, 8795)]