218560760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{1979}}^1$

素因数の和:2252

約数の個数: 64

約数和(自身を含む): 538876800

約数和(自身を除く): 320316040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 251, 440, 502, 1004, 1255, 1979, 2008, 2510, 2761, 3958, 5020, 5522, 7916, 9895, 10040, 11044, 13805, 15832, 19790, 21769, 22088, 27610, 39580, 43538, 55220, 79160, 87076, 108845, 110440, 174152, 217690, 435380, 496729, 870760, 993458, 1986916, 2483645, 3973832, 4967290, 5464019, 9934580, 10928038, 19869160, 21856076, 27320095, 43712152, 54640190, 109280380, 218560760]

約数ペア:

[(1, 218560760), (2, 109280380), (4, 54640190), (5, 43712152), (8, 27320095), (10, 21856076), (11, 19869160), (20, 10928038), (22, 9934580), (40, 5464019), (44, 4967290), (55, 3973832), (88, 2483645), (110, 1986916), (220, 993458), (251, 870760), (440, 496729), (502, 435380), (1004, 217690), (1255, 174152), (1979, 110440), (2008, 108845), (2510, 87076), (2761, 79160), (3958, 55220), (5020, 43538), (5522, 39580), (7916, 27610), (9895, 22088), (10040, 21769), (11044, 19790), (13805, 15832)]