21172004

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2341}}^1$

素因数の和:2388

約数の個数: 48

約数和(自身を含む): 47214720

約数和(自身を除く): 26042716

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 34, 38, 68, 76, 119, 133, 238, 266, 323, 476, 532, 646, 1292, 2261, 2341, 4522, 4682, 9044, 9364, 16387, 32774, 39797, 44479, 65548, 79594, 88958, 159188, 177916, 278579, 311353, 557158, 622706, 756143, 1114316, 1245412, 1512286, 3024572, 5293001, 10586002, 21172004]

約数ペア:

[(1, 21172004), (2, 10586002), (4, 5293001), (7, 3024572), (14, 1512286), (17, 1245412), (19, 1114316), (28, 756143), (34, 622706), (38, 557158), (68, 311353), (76, 278579), (119, 177916), (133, 159188), (238, 88958), (266, 79594), (323, 65548), (476, 44479), (532, 39797), (646, 32774), (1292, 16387), (2261, 9364), (2341, 9044), (4522, 4682)]