16663280

素因数分解:

$2^4\times 5^1\times {\mathrm{208291}}^1$

素因数の和:208304

約数の個数: 20

約数和(自身を含む): 38742312

約数和(自身を除く): 22079032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 208291, 416582, 833164, 1041455, 1666328, 2082910, 3332656, 4165820, 8331640, 16663280]

約数ペア:

[(1, 16663280), (2, 8331640), (4, 4165820), (5, 3332656), (8, 2082910), (10, 1666328), (16, 1041455), (20, 833164), (40, 416582), (80, 208291)]