20378835

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1567}}^1$

素因数の和:1612

約数の個数: 36

約数和(自身を含む): 37547328

約数和(自身を除く): 17168493

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 289, 765, 867, 1445, 1567, 2601, 4335, 4701, 7835, 13005, 14103, 23505, 26639, 70515, 79917, 133195, 239751, 399585, 452863, 1198755, 1358589, 2264315, 4075767, 6792945, 20378835]

約数ペア:

[(1, 20378835), (3, 6792945), (5, 4075767), (9, 2264315), (15, 1358589), (17, 1198755), (45, 452863), (51, 399585), (85, 239751), (153, 133195), (255, 79917), (289, 70515), (765, 26639), (867, 23505), (1445, 14103), (1567, 13005), (2601, 7835), (4335, 4701)]