16965640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2153}}^1$

素因数の和:2361

約数の個数: 32

約数和(自身を含む): 38384280

約数和(自身を除く): 21418640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2153, 3940, 4306, 7880, 8612, 10765, 17224, 21530, 43060, 86120, 424141, 848282, 1696564, 2120705, 3393128, 4241410, 8482820, 16965640]

約数ペア:

[(1, 16965640), (2, 8482820), (4, 4241410), (5, 3393128), (8, 2120705), (10, 1696564), (20, 848282), (40, 424141), (197, 86120), (394, 43060), (788, 21530), (985, 17224), (1576, 10765), (1970, 8612), (2153, 7880), (3940, 4306)]