20528020881

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1721}}^1\times {\mathrm{1987}}^1$

素因数の和:3766

約数の個数: 48

約数和(自身を含む): 32042424960

約数和(自身を除く): 11514404079

約数列:

[1, 3, 9, 23, 29, 69, 87, 207, 261, 667, 1721, 1987, 2001, 5163, 5961, 6003, 15489, 17883, 39583, 45701, 49909, 57623, 118749, 137103, 149727, 172869, 356247, 411309, 449181, 518607, 1147907, 1325329, 3419627, 3443721, 3975987, 10258881, 10331163, 11927961, 30776643, 78651421, 99169183, 235954263, 297507549, 707862789, 892522647, 2280891209, 6842673627, 20528020881]

約数ペア:

[(1, 20528020881), (3, 6842673627), (9, 2280891209), (23, 892522647), (29, 707862789), (69, 297507549), (87, 235954263), (207, 99169183), (261, 78651421), (667, 30776643), (1721, 11927961), (1987, 10331163), (2001, 10258881), (5163, 3975987), (5961, 3443721), (6003, 3419627), (15489, 1325329), (17883, 1147907), (39583, 518607), (45701, 449181), (49909, 411309), (57623, 356247), (118749, 172869), (137103, 149727)]