66493640

素因数分解:

$2^3\times 5^1\times {\mathrm{1662341}}^1$

素因数の和:1662352

約数の個数: 16

約数和(自身を含む): 149610780

約数和(自身を除く): 83117140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1662341, 3324682, 6649364, 8311705, 13298728, 16623410, 33246820, 66493640]

約数ペア:

[(1, 66493640), (2, 33246820), (4, 16623410), (5, 13298728), (8, 8311705), (10, 6649364), (20, 3324682), (40, 1662341)]