21242655

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{127}}^1$

素因数の和:210

約数の個数: 80

約数和(自身を含む): 44605440

約数和(自身を除く): 23362785

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 59, 63, 81, 105, 127, 135, 177, 189, 295, 315, 381, 405, 413, 531, 567, 635, 885, 889, 945, 1143, 1239, 1593, 1905, 2065, 2655, 2667, 2835, 3429, 3717, 4445, 4779, 5715, 6195, 7493, 7965, 8001, 10287, 11151, 13335, 17145, 18585, 22479, 23895, 24003, 33453, 37465, 40005, 51435, 52451, 55755, 67437, 72009, 112395, 120015, 157353, 167265, 202311, 262255, 337185, 360045, 472059, 606933, 786765, 1011555, 1416177, 2360295, 3034665, 4248531, 7080885, 21242655]

約数ペア:

[(1, 21242655), (3, 7080885), (5, 4248531), (7, 3034665), (9, 2360295), (15, 1416177), (21, 1011555), (27, 786765), (35, 606933), (45, 472059), (59, 360045), (63, 337185), (81, 262255), (105, 202311), (127, 167265), (135, 157353), (177, 120015), (189, 112395), (295, 72009), (315, 67437), (381, 55755), (405, 52451), (413, 51435), (531, 40005), (567, 37465), (635, 33453), (885, 24003), (889, 23895), (945, 22479), (1143, 18585), (1239, 17145), (1593, 13335), (1905, 11151), (2065, 10287), (2655, 8001), (2667, 7965), (2835, 7493), (3429, 6195), (3717, 5715), (4445, 4779)]