19840743

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 32969664

約数和(自身を除く): 13128921

約数列:

[1, 3, 9, 13, 23, 39, 69, 73, 101, 117, 207, 219, 299, 303, 657, 897, 909, 949, 1313, 1679, 2323, 2691, 2847, 3939, 5037, 6969, 7373, 8541, 11817, 15111, 20907, 21827, 22119, 30199, 65481, 66357, 90597, 95849, 169579, 196443, 271791, 287547, 508737, 862641, 1526211, 2204527, 6613581, 19840743]

約数ペア:

[(1, 19840743), (3, 6613581), (9, 2204527), (13, 1526211), (23, 862641), (39, 508737), (69, 287547), (73, 271791), (101, 196443), (117, 169579), (207, 95849), (219, 90597), (299, 66357), (303, 65481), (657, 30199), (897, 22119), (909, 21827), (949, 20907), (1313, 15111), (1679, 11817), (2323, 8541), (2691, 7373), (2847, 6969), (3939, 5037)]