21664128815

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1\times {\mathrm{1409}}^1$

素因数の和:1872

約数の個数: 64

約数和(自身を含む): 31602769920

約数和(自身を除く): 9938641105

約数列:

[1, 5, 7, 31, 35, 37, 155, 185, 217, 259, 383, 1085, 1147, 1295, 1409, 1915, 2681, 5735, 7045, 8029, 9863, 11873, 13405, 14171, 40145, 43679, 49315, 52133, 59365, 70855, 83111, 99197, 218395, 260665, 305753, 364931, 415555, 439301, 495985, 539647, 1528765, 1616123, 1824655, 2196505, 2698235, 3075107, 3777529, 8080615, 11312861, 15375535, 16729057, 18887645, 19966939, 56564305, 83645285, 99834695, 117103399, 139768573, 585516995, 618975109, 698842865, 3094875545, 4332825763, 21664128815]

約数ペア:

[(1, 21664128815), (5, 4332825763), (7, 3094875545), (31, 698842865), (35, 618975109), (37, 585516995), (155, 139768573), (185, 117103399), (217, 99834695), (259, 83645285), (383, 56564305), (1085, 19966939), (1147, 18887645), (1295, 16729057), (1409, 15375535), (1915, 11312861), (2681, 8080615), (5735, 3777529), (7045, 3075107), (8029, 2698235), (9863, 2196505), (11873, 1824655), (13405, 1616123), (14171, 1528765), (40145, 539647), (43679, 495985), (49315, 439301), (52133, 415555), (59365, 364931), (70855, 305753), (83111, 260665), (99197, 218395)]