21031874516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{719}}^1\times {\mathrm{384889}}^1$

素因数の和:385631

約数の個数: 24

約数和(自身を含む): 38796912000

約数和(自身を除く): 17765037484

約数列:

[1, 2, 4, 19, 38, 76, 719, 1438, 2876, 13661, 27322, 54644, 384889, 769778, 1539556, 7312891, 14625782, 29251564, 276735191, 553470382, 1106940764, 5257968629, 10515937258, 21031874516]

約数ペア:

[(1, 21031874516), (2, 10515937258), (4, 5257968629), (19, 1106940764), (38, 553470382), (76, 276735191), (719, 29251564), (1438, 14625782), (2876, 7312891), (13661, 1539556), (27322, 769778), (54644, 384889)]