21143835

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:154

約数の個数: 80

約数和(自身を含む): 41713056

約数和(自身を除く): 20569221

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 81, 83, 85, 111, 135, 153, 185, 249, 255, 333, 405, 415, 459, 555, 629, 747, 765, 999, 1245, 1377, 1411, 1665, 1887, 2241, 2295, 2997, 3071, 3145, 3735, 4233, 4995, 5661, 6723, 6885, 7055, 9213, 9435, 11205, 12699, 14985, 15355, 16983, 21165, 27639, 28305, 33615, 38097, 46065, 50949, 52207, 63495, 82917, 84915, 114291, 138195, 156621, 190485, 248751, 254745, 261035, 414585, 469863, 571455, 783105, 1243755, 1409589, 2349315, 4228767, 7047945, 21143835]

約数ペア:

[(1, 21143835), (3, 7047945), (5, 4228767), (9, 2349315), (15, 1409589), (17, 1243755), (27, 783105), (37, 571455), (45, 469863), (51, 414585), (81, 261035), (83, 254745), (85, 248751), (111, 190485), (135, 156621), (153, 138195), (185, 114291), (249, 84915), (255, 82917), (333, 63495), (405, 52207), (415, 50949), (459, 46065), (555, 38097), (629, 33615), (747, 28305), (765, 27639), (999, 21165), (1245, 16983), (1377, 15355), (1411, 14985), (1665, 12699), (1887, 11205), (2241, 9435), (2295, 9213), (2997, 7055), (3071, 6885), (3145, 6723), (3735, 5661), (4233, 4995)]