66540320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{491}}^1$

素因数の和:535

約数の個数: 144

約数和(自身を含む): 197878464

約数和(自身を除く): 131338144

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, 491, 560, 605, 616, 770, 847, 880, 968, 982, 1120, 1210, 1232, 1540, 1694, 1760, 1936, 1964, 2420, 2455, 2464, 3080, 3388, 3437, 3872, 3928, 4235, 4840, 4910, 5401, 6160, 6776, 6874, 7856, 8470, 9680, 9820, 10802, 12320, 13552, 13748, 15712, 16940, 17185, 19360, 19640, 21604, 27005, 27104, 27496, 33880, 34370, 37807, 39280, 43208, 54010, 54992, 59411, 67760, 68740, 75614, 78560, 86416, 108020, 109984, 118822, 135520, 137480, 151228, 172832, 189035, 216040, 237644, 274960, 297055, 302456, 378070, 415877, 432080, 475288, 549920, 594110, 604912, 756140, 831754, 864160, 950576, 1188220, 1209824, 1512280, 1663508, 1901152, 2079385, 2376440, 3024560, 3327016, 4158770, 4752880, 6049120, 6654032, 8317540, 9505760, 13308064, 16635080, 33270160, 66540320]

約数ペア:

[(1, 66540320), (2, 33270160), (4, 16635080), (5, 13308064), (7, 9505760), (8, 8317540), (10, 6654032), (11, 6049120), (14, 4752880), (16, 4158770), (20, 3327016), (22, 3024560), (28, 2376440), (32, 2079385), (35, 1901152), (40, 1663508), (44, 1512280), (55, 1209824), (56, 1188220), (70, 950576), (77, 864160), (80, 831754), (88, 756140), (110, 604912), (112, 594110), (121, 549920), (140, 475288), (154, 432080), (160, 415877), (176, 378070), (220, 302456), (224, 297055), (242, 274960), (280, 237644), (308, 216040), (352, 189035), (385, 172832), (440, 151228), (484, 137480), (491, 135520), (560, 118822), (605, 109984), (616, 108020), (770, 86416), (847, 78560), (880, 75614), (968, 68740), (982, 67760), (1120, 59411), (1210, 54992), (1232, 54010), (1540, 43208), (1694, 39280), (1760, 37807), (1936, 34370), (1964, 33880), (2420, 27496), (2455, 27104), (2464, 27005), (3080, 21604), (3388, 19640), (3437, 19360), (3872, 17185), (3928, 16940), (4235, 15712), (4840, 13748), (4910, 13552), (5401, 12320), (6160, 10802), (6776, 9820), (6874, 9680), (7856, 8470)]