81288840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{353}}^1$

素因数の和:487

約数の個数: 128

約数和(自身を含む): 259977600

約数和(自身を除く): 178688760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 101, 114, 120, 152, 190, 202, 228, 285, 303, 353, 380, 404, 456, 505, 570, 606, 706, 760, 808, 1010, 1059, 1140, 1212, 1412, 1515, 1765, 1919, 2020, 2118, 2280, 2424, 2824, 3030, 3530, 3838, 4040, 4236, 5295, 5757, 6060, 6707, 7060, 7676, 8472, 9595, 10590, 11514, 12120, 13414, 14120, 15352, 19190, 20121, 21180, 23028, 26828, 28785, 33535, 35653, 38380, 40242, 42360, 46056, 53656, 57570, 67070, 71306, 76760, 80484, 100605, 106959, 115140, 134140, 142612, 160968, 178265, 201210, 213918, 230280, 268280, 285224, 356530, 402420, 427836, 534795, 677407, 713060, 804840, 855672, 1069590, 1354814, 1426120, 2032221, 2139180, 2709628, 3387035, 4064442, 4278360, 5419256, 6774070, 8128884, 10161105, 13548140, 16257768, 20322210, 27096280, 40644420, 81288840]

約数ペア:

[(1, 81288840), (2, 40644420), (3, 27096280), (4, 20322210), (5, 16257768), (6, 13548140), (8, 10161105), (10, 8128884), (12, 6774070), (15, 5419256), (19, 4278360), (20, 4064442), (24, 3387035), (30, 2709628), (38, 2139180), (40, 2032221), (57, 1426120), (60, 1354814), (76, 1069590), (95, 855672), (101, 804840), (114, 713060), (120, 677407), (152, 534795), (190, 427836), (202, 402420), (228, 356530), (285, 285224), (303, 268280), (353, 230280), (380, 213918), (404, 201210), (456, 178265), (505, 160968), (570, 142612), (606, 134140), (706, 115140), (760, 106959), (808, 100605), (1010, 80484), (1059, 76760), (1140, 71306), (1212, 67070), (1412, 57570), (1515, 53656), (1765, 46056), (1919, 42360), (2020, 40242), (2118, 38380), (2280, 35653), (2424, 33535), (2824, 28785), (3030, 26828), (3530, 23028), (3838, 21180), (4040, 20121), (4236, 19190), (5295, 15352), (5757, 14120), (6060, 13414), (6707, 12120), (7060, 11514), (7676, 10590), (8472, 9595)]