123458720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{911}}^1$

素因数の和:955

約数の個数: 144

約数和(自身を含む): 366799104

約数和(自身を除く): 243340384

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 32, 35, 40, 44, 55, 56, 70, 77, 80, 88, 110, 112, 121, 140, 154, 160, 176, 220, 224, 242, 280, 308, 352, 385, 440, 484, 560, 605, 616, 770, 847, 880, 911, 968, 1120, 1210, 1232, 1540, 1694, 1760, 1822, 1936, 2420, 2464, 3080, 3388, 3644, 3872, 4235, 4555, 4840, 6160, 6377, 6776, 7288, 8470, 9110, 9680, 10021, 12320, 12754, 13552, 14576, 16940, 18220, 19360, 20042, 25508, 27104, 29152, 31885, 33880, 36440, 40084, 50105, 51016, 63770, 67760, 70147, 72880, 80168, 100210, 102032, 110231, 127540, 135520, 140294, 145760, 160336, 200420, 204064, 220462, 255080, 280588, 320672, 350735, 400840, 440924, 510160, 551155, 561176, 701470, 771617, 801680, 881848, 1020320, 1102310, 1122352, 1402940, 1543234, 1603360, 1763696, 2204620, 2244704, 2805880, 3086468, 3527392, 3858085, 4409240, 5611760, 6172936, 7716170, 8818480, 11223520, 12345872, 15432340, 17636960, 24691744, 30864680, 61729360, 123458720]

約数ペア:

[(1, 123458720), (2, 61729360), (4, 30864680), (5, 24691744), (7, 17636960), (8, 15432340), (10, 12345872), (11, 11223520), (14, 8818480), (16, 7716170), (20, 6172936), (22, 5611760), (28, 4409240), (32, 3858085), (35, 3527392), (40, 3086468), (44, 2805880), (55, 2244704), (56, 2204620), (70, 1763696), (77, 1603360), (80, 1543234), (88, 1402940), (110, 1122352), (112, 1102310), (121, 1020320), (140, 881848), (154, 801680), (160, 771617), (176, 701470), (220, 561176), (224, 551155), (242, 510160), (280, 440924), (308, 400840), (352, 350735), (385, 320672), (440, 280588), (484, 255080), (560, 220462), (605, 204064), (616, 200420), (770, 160336), (847, 145760), (880, 140294), (911, 135520), (968, 127540), (1120, 110231), (1210, 102032), (1232, 100210), (1540, 80168), (1694, 72880), (1760, 70147), (1822, 67760), (1936, 63770), (2420, 51016), (2464, 50105), (3080, 40084), (3388, 36440), (3644, 33880), (3872, 31885), (4235, 29152), (4555, 27104), (4840, 25508), (6160, 20042), (6377, 19360), (6776, 18220), (7288, 16940), (8470, 14576), (9110, 13552), (9680, 12754), (10021, 12320)]