21126890

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{227}}^2$

素因数の和:502

約数の個数: 24

約数和(自身を含む): 39128292

約数和(自身を除く): 18001402

約数列:

[1, 2, 5, 10, 41, 82, 205, 227, 410, 454, 1135, 2270, 9307, 18614, 46535, 51529, 93070, 103058, 257645, 515290, 2112689, 4225378, 10563445, 21126890]

約数ペア:

[(1, 21126890), (2, 10563445), (5, 4225378), (10, 2112689), (41, 515290), (82, 257645), (205, 103058), (227, 93070), (410, 51529), (454, 46535), (1135, 18614), (2270, 9307)]