21084525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1217}}^1$

素因数の和:1251

約数の個数: 72

約数和(自身を含む): 47121984

約数和(自身を除く): 26037459

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 45, 55, 63, 75, 77, 99, 105, 165, 175, 225, 231, 275, 315, 385, 495, 525, 693, 825, 1155, 1217, 1575, 1925, 2475, 3465, 3651, 5775, 6085, 8519, 10953, 13387, 17325, 18255, 25557, 30425, 40161, 42595, 54765, 66935, 76671, 91275, 93709, 120483, 127785, 200805, 212975, 273825, 281127, 334675, 383355, 468545, 602415, 638925, 843381, 1004025, 1405635, 1916775, 2342725, 3012075, 4216905, 7028175, 21084525]

約数ペア:

[(1, 21084525), (3, 7028175), (5, 4216905), (7, 3012075), (9, 2342725), (11, 1916775), (15, 1405635), (21, 1004025), (25, 843381), (33, 638925), (35, 602415), (45, 468545), (55, 383355), (63, 334675), (75, 281127), (77, 273825), (99, 212975), (105, 200805), (165, 127785), (175, 120483), (225, 93709), (231, 91275), (275, 76671), (315, 66935), (385, 54765), (495, 42595), (525, 40161), (693, 30425), (825, 25557), (1155, 18255), (1217, 17325), (1575, 13387), (1925, 10953), (2475, 8519), (3465, 6085), (3651, 5775)]