19961810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2039}}^1$

素因数の和:2146

約数の個数: 32

約数和(自身を含む): 39657600

約数和(自身を除く): 19695790

約数列:

[1, 2, 5, 10, 11, 22, 55, 89, 110, 178, 445, 890, 979, 1958, 2039, 4078, 4895, 9790, 10195, 20390, 22429, 44858, 112145, 181471, 224290, 362942, 907355, 1814710, 1996181, 3992362, 9980905, 19961810]

約数ペア:

[(1, 19961810), (2, 9980905), (5, 3992362), (10, 1996181), (11, 1814710), (22, 907355), (55, 362942), (89, 224290), (110, 181471), (178, 112145), (445, 44858), (890, 22429), (979, 20390), (1958, 10195), (2039, 9790), (4078, 4895)]