28311525

素因数分解:

$3^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:105

約数の個数: 120

約数和(自身を含む): 60496128

約数和(自身を除く): 32184603

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 31, 33, 41, 45, 55, 75, 81, 93, 99, 123, 135, 155, 165, 205, 225, 275, 279, 297, 341, 369, 405, 451, 465, 495, 615, 675, 775, 825, 837, 891, 1023, 1025, 1107, 1271, 1353, 1395, 1485, 1705, 1845, 2025, 2255, 2325, 2475, 2511, 3069, 3075, 3321, 3813, 4059, 4185, 4455, 5115, 5535, 6355, 6765, 6975, 7425, 8525, 9207, 9225, 11275, 11439, 12177, 12555, 13981, 15345, 16605, 19065, 20295, 20925, 22275, 25575, 27621, 27675, 31775, 33825, 34317, 36531, 41943, 46035, 57195, 60885, 62775, 69905, 76725, 83025, 95325, 101475, 102951, 125829, 138105, 171585, 182655, 209715, 230175, 285975, 304425, 349525, 377487, 514755, 629145, 690525, 857925, 913275, 1048575, 1132461, 1887435, 2573775, 3145725, 5662305, 9437175, 28311525]

約数ペア:

[(1, 28311525), (3, 9437175), (5, 5662305), (9, 3145725), (11, 2573775), (15, 1887435), (25, 1132461), (27, 1048575), (31, 913275), (33, 857925), (41, 690525), (45, 629145), (55, 514755), (75, 377487), (81, 349525), (93, 304425), (99, 285975), (123, 230175), (135, 209715), (155, 182655), (165, 171585), (205, 138105), (225, 125829), (275, 102951), (279, 101475), (297, 95325), (341, 83025), (369, 76725), (405, 69905), (451, 62775), (465, 60885), (495, 57195), (615, 46035), (675, 41943), (775, 36531), (825, 34317), (837, 33825), (891, 31775), (1023, 27675), (1025, 27621), (1107, 25575), (1271, 22275), (1353, 20925), (1395, 20295), (1485, 19065), (1705, 16605), (1845, 15345), (2025, 13981), (2255, 12555), (2325, 12177), (2475, 11439), (2511, 11275), (3069, 9225), (3075, 9207), (3321, 8525), (3813, 7425), (4059, 6975), (4185, 6765), (4455, 6355), (5115, 5535)]