21300136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 48121920

約数和(自身を除く): 26821784

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 43, 44, 52, 86, 88, 104, 143, 172, 286, 344, 433, 473, 559, 572, 866, 946, 1118, 1144, 1732, 1892, 2236, 3464, 3784, 4472, 4763, 5629, 6149, 9526, 11258, 12298, 18619, 19052, 22516, 24596, 37238, 38104, 45032, 49192, 61919, 74476, 123838, 148952, 204809, 242047, 247676, 409618, 484094, 495352, 819236, 968188, 1638472, 1936376, 2662517, 5325034, 10650068, 21300136]

約数ペア:

[(1, 21300136), (2, 10650068), (4, 5325034), (8, 2662517), (11, 1936376), (13, 1638472), (22, 968188), (26, 819236), (43, 495352), (44, 484094), (52, 409618), (86, 247676), (88, 242047), (104, 204809), (143, 148952), (172, 123838), (286, 74476), (344, 61919), (433, 49192), (473, 45032), (559, 38104), (572, 37238), (866, 24596), (946, 22516), (1118, 19052), (1144, 18619), (1732, 12298), (1892, 11258), (2236, 9526), (3464, 6149), (3784, 5629), (4472, 4763)]