65223280

素因数分解:

$2^4\times 5^1\times {\mathrm{815291}}^1$

素因数の和:815304

約数の個数: 20

約数和(自身を含む): 151644312

約数和(自身を除く): 86421032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 815291, 1630582, 3261164, 4076455, 6522328, 8152910, 13044656, 16305820, 32611640, 65223280]

約数ペア:

[(1, 65223280), (2, 32611640), (4, 16305820), (5, 13044656), (8, 8152910), (10, 6522328), (16, 4076455), (20, 3261164), (40, 1630582), (80, 815291)]