21096531440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:935

約数の個数: 160

約数和(自身を含む): 52429977600

約数和(自身を除く): 31333446160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 109, 152, 190, 218, 223, 304, 380, 436, 446, 545, 571, 760, 872, 892, 1090, 1115, 1142, 1520, 1744, 1784, 2071, 2180, 2230, 2284, 2855, 3568, 4142, 4237, 4360, 4460, 4568, 5710, 8284, 8474, 8720, 8920, 9136, 10355, 10849, 11420, 16568, 16948, 17840, 20710, 21185, 21698, 22840, 24307, 33136, 33896, 41420, 42370, 43396, 45680, 48614, 54245, 62239, 67792, 82840, 84740, 86792, 97228, 108490, 121535, 124478, 127333, 165680, 169480, 173584, 194456, 216980, 243070, 248956, 254666, 311195, 338960, 388912, 433960, 461833, 486140, 497912, 509332, 622390, 636665, 867920, 923666, 972280, 995824, 1018664, 1182541, 1244780, 1273330, 1847332, 1944560, 2037328, 2309165, 2365082, 2419327, 2489560, 2546660, 3694664, 4618330, 4730164, 4838654, 4979120, 5093320, 5912705, 7389328, 9236660, 9460328, 9677308, 10186640, 11825410, 12096635, 13879297, 18473320, 18920656, 19354616, 23650820, 24193270, 27758594, 36946640, 38709232, 47301640, 48386540, 55517188, 69396485, 94603280, 96773080, 111034376, 138792970, 193546160, 222068752, 263706643, 277585940, 527413286, 555171880, 1054826572, 1110343760, 1318533215, 2109653144, 2637066430, 4219306288, 5274132860, 10548265720, 21096531440]

約数ペア:

[(1, 21096531440), (2, 10548265720), (4, 5274132860), (5, 4219306288), (8, 2637066430), (10, 2109653144), (16, 1318533215), (19, 1110343760), (20, 1054826572), (38, 555171880), (40, 527413286), (76, 277585940), (80, 263706643), (95, 222068752), (109, 193546160), (152, 138792970), (190, 111034376), (218, 96773080), (223, 94603280), (304, 69396485), (380, 55517188), (436, 48386540), (446, 47301640), (545, 38709232), (571, 36946640), (760, 27758594), (872, 24193270), (892, 23650820), (1090, 19354616), (1115, 18920656), (1142, 18473320), (1520, 13879297), (1744, 12096635), (1784, 11825410), (2071, 10186640), (2180, 9677308), (2230, 9460328), (2284, 9236660), (2855, 7389328), (3568, 5912705), (4142, 5093320), (4237, 4979120), (4360, 4838654), (4460, 4730164), (4568, 4618330), (5710, 3694664), (8284, 2546660), (8474, 2489560), (8720, 2419327), (8920, 2365082), (9136, 2309165), (10355, 2037328), (10849, 1944560), (11420, 1847332), (16568, 1273330), (16948, 1244780), (17840, 1182541), (20710, 1018664), (21185, 995824), (21698, 972280), (22840, 923666), (24307, 867920), (33136, 636665), (33896, 622390), (41420, 509332), (42370, 497912), (43396, 486140), (45680, 461833), (48614, 433960), (54245, 388912), (62239, 338960), (67792, 311195), (82840, 254666), (84740, 248956), (86792, 243070), (97228, 216980), (108490, 194456), (121535, 173584), (124478, 169480), (127333, 165680)]