21311235

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 42024960

約数和(自身を除く): 20713725

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 99, 113, 127, 135, 165, 297, 339, 381, 495, 565, 635, 1017, 1143, 1243, 1397, 1485, 1695, 1905, 3051, 3429, 3729, 4191, 5085, 5715, 6215, 6985, 11187, 12573, 14351, 15255, 17145, 18645, 20955, 33561, 37719, 43053, 55935, 62865, 71755, 129159, 157861, 167805, 188595, 215265, 387477, 473583, 645795, 789305, 1420749, 1937385, 2367915, 4262247, 7103745, 21311235]

約数ペア:

[(1, 21311235), (3, 7103745), (5, 4262247), (9, 2367915), (11, 1937385), (15, 1420749), (27, 789305), (33, 645795), (45, 473583), (55, 387477), (99, 215265), (113, 188595), (127, 167805), (135, 157861), (165, 129159), (297, 71755), (339, 62865), (381, 55935), (495, 43053), (565, 37719), (635, 33561), (1017, 20955), (1143, 18645), (1243, 17145), (1397, 15255), (1485, 14351), (1695, 12573), (1905, 11187), (3051, 6985), (3429, 6215), (3729, 5715), (4191, 5085)]