2640700840

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1\times {\mathrm{233}}^1$

素因数の和:491

約数の個数: 128

約数和(自身を含む): 6340239360

約数和(自身を除く): 3699538520

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 97, 115, 127, 184, 194, 230, 233, 254, 388, 460, 466, 485, 508, 635, 776, 920, 932, 970, 1016, 1165, 1270, 1864, 1940, 2231, 2330, 2540, 2921, 3880, 4462, 4660, 5080, 5359, 5842, 8924, 9320, 10718, 11155, 11684, 12319, 14605, 17848, 21436, 22310, 22601, 23368, 24638, 26795, 29210, 29591, 42872, 44620, 45202, 49276, 53590, 58420, 59182, 61595, 89240, 90404, 98552, 107180, 113005, 116840, 118364, 123190, 147955, 180808, 214360, 226010, 236728, 246380, 283337, 295910, 452020, 492760, 519823, 566674, 591820, 680593, 904040, 1039646, 1133348, 1183640, 1361186, 1416685, 2079292, 2266696, 2599115, 2722372, 2833370, 2870327, 3402965, 4158584, 5198230, 5444744, 5666740, 5740654, 6805930, 10396460, 11333480, 11481308, 13611860, 14351635, 20792920, 22962616, 27223720, 28703270, 57406540, 66017521, 114813080, 132035042, 264070084, 330087605, 528140168, 660175210, 1320350420, 2640700840]

約数ペア:

[(1, 2640700840), (2, 1320350420), (4, 660175210), (5, 528140168), (8, 330087605), (10, 264070084), (20, 132035042), (23, 114813080), (40, 66017521), (46, 57406540), (92, 28703270), (97, 27223720), (115, 22962616), (127, 20792920), (184, 14351635), (194, 13611860), (230, 11481308), (233, 11333480), (254, 10396460), (388, 6805930), (460, 5740654), (466, 5666740), (485, 5444744), (508, 5198230), (635, 4158584), (776, 3402965), (920, 2870327), (932, 2833370), (970, 2722372), (1016, 2599115), (1165, 2266696), (1270, 2079292), (1864, 1416685), (1940, 1361186), (2231, 1183640), (2330, 1133348), (2540, 1039646), (2921, 904040), (3880, 680593), (4462, 591820), (4660, 566674), (5080, 519823), (5359, 492760), (5842, 452020), (8924, 295910), (9320, 283337), (10718, 246380), (11155, 236728), (11684, 226010), (12319, 214360), (14605, 180808), (17848, 147955), (21436, 123190), (22310, 118364), (22601, 116840), (23368, 113005), (24638, 107180), (26795, 98552), (29210, 90404), (29591, 89240), (42872, 61595), (44620, 59182), (45202, 58420), (49276, 53590)]