65419780

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{7451}}^1$

素因数の和:7899

約数の個数: 24

約数和(自身を含む): 137712960

約数和(自身を除く): 72293180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 7451, 8780, 14902, 29804, 37255, 74510, 149020, 3270989, 6541978, 13083956, 16354945, 32709890, 65419780]

約数ペア:

[(1, 65419780), (2, 32709890), (4, 16354945), (5, 13083956), (10, 6541978), (20, 3270989), (439, 149020), (878, 74510), (1756, 37255), (2195, 29804), (4390, 14902), (7451, 8780)]