81447520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{601}}^1$

素因数の和:645

約数の個数: 144

約数和(自身を含む): 242119584

約数和(自身を除く): 160672064

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, 601, 605, 616, 770, 847, 880, 968, 1120, 1202, 1210, 1232, 1540, 1694, 1760, 1936, 2404, 2420, 2464, 3005, 3080, 3388, 3872, 4207, 4235, 4808, 4840, 6010, 6160, 6611, 6776, 8414, 8470, 9616, 9680, 12020, 12320, 13222, 13552, 16828, 16940, 19232, 19360, 21035, 24040, 26444, 27104, 33055, 33656, 33880, 42070, 46277, 48080, 52888, 66110, 67312, 67760, 72721, 84140, 92554, 96160, 105776, 132220, 134624, 135520, 145442, 168280, 185108, 211552, 231385, 264440, 290884, 336560, 363605, 370216, 462770, 509047, 528880, 581768, 673120, 727210, 740432, 925540, 1018094, 1057760, 1163536, 1454420, 1480864, 1851080, 2036188, 2327072, 2545235, 2908840, 3702160, 4072376, 5090470, 5817680, 7404320, 8144752, 10180940, 11635360, 16289504, 20361880, 40723760, 81447520]

約数ペア:

[(1, 81447520), (2, 40723760), (4, 20361880), (5, 16289504), (7, 11635360), (8, 10180940), (10, 8144752), (11, 7404320), (14, 5817680), (16, 5090470), (20, 4072376), (22, 3702160), (28, 2908840), (32, 2545235), (35, 2327072), (40, 2036188), (44, 1851080), (55, 1480864), (56, 1454420), (70, 1163536), (77, 1057760), (80, 1018094), (88, 925540), (110, 740432), (112, 727210), (121, 673120), (140, 581768), (154, 528880), (160, 509047), (176, 462770), (220, 370216), (224, 363605), (242, 336560), (280, 290884), (308, 264440), (352, 231385), (385, 211552), (440, 185108), (484, 168280), (560, 145442), (601, 135520), (605, 134624), (616, 132220), (770, 105776), (847, 96160), (880, 92554), (968, 84140), (1120, 72721), (1202, 67760), (1210, 67312), (1232, 66110), (1540, 52888), (1694, 48080), (1760, 46277), (1936, 42070), (2404, 33880), (2420, 33656), (2464, 33055), (3005, 27104), (3080, 26444), (3388, 24040), (3872, 21035), (4207, 19360), (4235, 19232), (4808, 16940), (4840, 16828), (6010, 13552), (6160, 13222), (6611, 12320), (6776, 12020), (8414, 9680), (8470, 9616)]