20825595

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{3889}}^1$

素因数の和:3924

約数の個数: 48

約数和(自身を含む): 43692480

約数和(自身を除く): 22866885

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 35, 45, 51, 63, 85, 105, 119, 153, 255, 315, 357, 595, 765, 1071, 1785, 3889, 5355, 11667, 19445, 27223, 35001, 58335, 66113, 81669, 136115, 175005, 198339, 245007, 330565, 408345, 462791, 595017, 991695, 1225035, 1388373, 2313955, 2975085, 4165119, 6941865, 20825595]

約数ペア:

[(1, 20825595), (3, 6941865), (5, 4165119), (7, 2975085), (9, 2313955), (15, 1388373), (17, 1225035), (21, 991695), (35, 595017), (45, 462791), (51, 408345), (63, 330565), (85, 245007), (105, 198339), (119, 175005), (153, 136115), (255, 81669), (315, 66113), (357, 58335), (595, 35001), (765, 27223), (1071, 19445), (1785, 11667), (3889, 5355)]