21960855

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{1367}}^1$

素因数の和:1405

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 25317225

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 51, 63, 85, 105, 119, 135, 153, 189, 255, 315, 357, 459, 595, 765, 945, 1071, 1367, 1785, 2295, 3213, 4101, 5355, 6835, 9569, 12303, 16065, 20505, 23239, 28707, 36909, 47845, 61515, 69717, 86121, 116195, 143535, 162673, 184545, 209151, 258363, 348585, 430605, 488019, 627453, 813365, 1045755, 1291815, 1464057, 2440095, 3137265, 4392171, 7320285, 21960855]

約数ペア:

[(1, 21960855), (3, 7320285), (5, 4392171), (7, 3137265), (9, 2440095), (15, 1464057), (17, 1291815), (21, 1045755), (27, 813365), (35, 627453), (45, 488019), (51, 430605), (63, 348585), (85, 258363), (105, 209151), (119, 184545), (135, 162673), (153, 143535), (189, 116195), (255, 86121), (315, 69717), (357, 61515), (459, 47845), (595, 36909), (765, 28707), (945, 23239), (1071, 20505), (1367, 16065), (1785, 12303), (2295, 9569), (3213, 6835), (4101, 5355)]