663280

素因数分解:

$2^4\times 5^1\times {\mathrm{8291}}^1$

素因数の和:8304

約数の個数: 20

約数和(自身を含む): 1542312

約数和(自身を除く): 879032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8291, 16582, 33164, 41455, 66328, 82910, 132656, 165820, 331640, 663280]

約数ペア:

[(1, 663280), (2, 331640), (4, 165820), (5, 132656), (8, 82910), (10, 66328), (16, 41455), (20, 33164), (40, 16582), (80, 8291)]