21927807

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 38776320

約数和(自身を除く): 16848513

約数列:

[1, 3, 9, 11, 17, 27, 33, 43, 51, 99, 101, 129, 153, 187, 297, 303, 387, 459, 473, 561, 731, 909, 1111, 1161, 1419, 1683, 1717, 2193, 2727, 3333, 4257, 4343, 5049, 5151, 6579, 8041, 9999, 12771, 13029, 15453, 18887, 19737, 24123, 29997, 39087, 46359, 47773, 56661, 72369, 73831, 117261, 143319, 169983, 217107, 221493, 429957, 509949, 664479, 812141, 1289871, 1993437, 2436423, 7309269, 21927807]

約数ペア:

[(1, 21927807), (3, 7309269), (9, 2436423), (11, 1993437), (17, 1289871), (27, 812141), (33, 664479), (43, 509949), (51, 429957), (99, 221493), (101, 217107), (129, 169983), (153, 143319), (187, 117261), (297, 73831), (303, 72369), (387, 56661), (459, 47773), (473, 46359), (561, 39087), (731, 29997), (909, 24123), (1111, 19737), (1161, 18887), (1419, 15453), (1683, 13029), (1717, 12771), (2193, 9999), (2727, 8041), (3333, 6579), (4257, 5151), (4343, 5049)]