66403880

素因数分解:

$2^3\times 5^1\times {\mathrm{1660097}}^1$

素因数の和:1660108

約数の個数: 16

約数和(自身を含む): 149408820

約数和(自身を除く): 83004940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1660097, 3320194, 6640388, 8300485, 13280776, 16600970, 33201940, 66403880]

約数ペア:

[(1, 66403880), (2, 33201940), (4, 16600970), (5, 13280776), (8, 8300485), (10, 6640388), (20, 3320194), (40, 1660097)]