21186165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1$

素因数の和:139

約数の個数: 128

約数和(自身を含む): 48771072

約数和(自身を除く): 27584907

約数列:

[1, 3, 5, 7, 11, 13, 15, 17, 21, 33, 35, 39, 51, 55, 65, 77, 83, 85, 91, 105, 119, 143, 165, 187, 195, 221, 231, 249, 255, 273, 357, 385, 415, 429, 455, 561, 581, 595, 663, 715, 913, 935, 1001, 1079, 1105, 1155, 1245, 1309, 1365, 1411, 1547, 1743, 1785, 2145, 2431, 2739, 2805, 2905, 3003, 3237, 3315, 3927, 4233, 4565, 4641, 5005, 5395, 6391, 6545, 7055, 7293, 7553, 7735, 8715, 9877, 11869, 12155, 13695, 15015, 15521, 16185, 17017, 18343, 19173, 19635, 21165, 22659, 23205, 29631, 31955, 35607, 36465, 37765, 46563, 49385, 51051, 55029, 59345, 77605, 83083, 85085, 91715, 95865, 108647, 113295, 128401, 148155, 178035, 201773, 232815, 249249, 255255, 275145, 325941, 385203, 415415, 543235, 605319, 642005, 1008865, 1246245, 1412411, 1629705, 1926015, 3026595, 4237233, 7062055, 21186165]

約数ペア:

[(1, 21186165), (3, 7062055), (5, 4237233), (7, 3026595), (11, 1926015), (13, 1629705), (15, 1412411), (17, 1246245), (21, 1008865), (33, 642005), (35, 605319), (39, 543235), (51, 415415), (55, 385203), (65, 325941), (77, 275145), (83, 255255), (85, 249249), (91, 232815), (105, 201773), (119, 178035), (143, 148155), (165, 128401), (187, 113295), (195, 108647), (221, 95865), (231, 91715), (249, 85085), (255, 83083), (273, 77605), (357, 59345), (385, 55029), (415, 51051), (429, 49385), (455, 46563), (561, 37765), (581, 36465), (595, 35607), (663, 31955), (715, 29631), (913, 23205), (935, 22659), (1001, 21165), (1079, 19635), (1105, 19173), (1155, 18343), (1245, 17017), (1309, 16185), (1365, 15521), (1411, 15015), (1547, 13695), (1743, 12155), (1785, 11869), (2145, 9877), (2431, 8715), (2739, 7735), (2805, 7553), (2905, 7293), (3003, 7055), (3237, 6545), (3315, 6391), (3927, 5395), (4233, 5005), (4565, 4641)]