20678924

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18013}}^1$

素因数の和:18065

約数の個数: 24

約数和(自身を含む): 42368928

約数和(自身を除く): 21690004

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18013, 36026, 72052, 126091, 252182, 504364, 738533, 1477066, 2954132, 5169731, 10339462, 20678924]

約数ペア:

[(1, 20678924), (2, 10339462), (4, 5169731), (7, 2954132), (14, 1477066), (28, 738533), (41, 504364), (82, 252182), (164, 126091), (287, 72052), (574, 36026), (1148, 18013)]