20673513

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{199}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 36691200

約数和(自身を除く): 16017687

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 97, 119, 153, 199, 291, 357, 597, 679, 873, 1071, 1393, 1649, 1791, 2037, 3383, 4179, 4947, 6111, 10149, 11543, 12537, 14841, 19303, 23681, 30447, 34629, 57909, 71043, 103887, 135121, 173727, 213129, 328151, 405363, 984453, 1216089, 2297057, 2953359, 6891171, 20673513]

約数ペア:

[(1, 20673513), (3, 6891171), (7, 2953359), (9, 2297057), (17, 1216089), (21, 984453), (51, 405363), (63, 328151), (97, 213129), (119, 173727), (153, 135121), (199, 103887), (291, 71043), (357, 57909), (597, 34629), (679, 30447), (873, 23681), (1071, 19303), (1393, 14841), (1649, 12537), (1791, 11543), (2037, 10149), (3383, 6111), (4179, 4947)]