66002780

素因数分解:

$2^2\times 5^1\times {\mathrm{3300139}}^1$

素因数の和:3300148

約数の個数: 12

約数和(自身を含む): 138605880

約数和(自身を除く): 72603100

約数列:

[1, 2, 4, 5, 10, 20, 3300139, 6600278, 13200556, 16500695, 33001390, 66002780]

約数ペア:

[(1, 66002780), (2, 33001390), (4, 16500695), (5, 13200556), (10, 6600278), (20, 3300139)]