19855180

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{7817}}^1$

素因数の和:7953

約数の個数: 24

約数和(自身を含む): 42029568

約数和(自身を除く): 22174388

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 7817, 15634, 31268, 39085, 78170, 156340, 992759, 1985518, 3971036, 4963795, 9927590, 19855180]

約数ペア:

[(1, 19855180), (2, 9927590), (4, 4963795), (5, 3971036), (10, 1985518), (20, 992759), (127, 156340), (254, 78170), (508, 39085), (635, 31268), (1270, 15634), (2540, 7817)]