201221680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{911}}^1$

素因数の和:1186

約数の個数: 80

約数和(自身を含む): 512967168

約数和(自身を除く): 311745488

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 251, 440, 502, 880, 911, 1004, 1255, 1822, 2008, 2510, 2761, 3644, 4016, 4555, 5020, 5522, 7288, 9110, 10021, 10040, 11044, 13805, 14576, 18220, 20042, 20080, 22088, 27610, 36440, 40084, 44176, 50105, 55220, 72880, 80168, 100210, 110440, 160336, 200420, 220880, 228661, 400840, 457322, 801680, 914644, 1143305, 1829288, 2286610, 2515271, 3658576, 4573220, 5030542, 9146440, 10061084, 12576355, 18292880, 20122168, 25152710, 40244336, 50305420, 100610840, 201221680]

約数ペア:

[(1, 201221680), (2, 100610840), (4, 50305420), (5, 40244336), (8, 25152710), (10, 20122168), (11, 18292880), (16, 12576355), (20, 10061084), (22, 9146440), (40, 5030542), (44, 4573220), (55, 3658576), (80, 2515271), (88, 2286610), (110, 1829288), (176, 1143305), (220, 914644), (251, 801680), (440, 457322), (502, 400840), (880, 228661), (911, 220880), (1004, 200420), (1255, 160336), (1822, 110440), (2008, 100210), (2510, 80168), (2761, 72880), (3644, 55220), (4016, 50105), (4555, 44176), (5020, 40084), (5522, 36440), (7288, 27610), (9110, 22088), (10021, 20080), (10040, 20042), (11044, 18220), (13805, 14576)]