8147920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:268

約数の個数: 80

約数和(自身を含む): 21212928

約数和(自身を除く): 13065008

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 47, 55, 80, 88, 94, 110, 176, 188, 197, 220, 235, 376, 394, 440, 470, 517, 752, 788, 880, 940, 985, 1034, 1576, 1880, 1970, 2068, 2167, 2585, 3152, 3760, 3940, 4136, 4334, 5170, 7880, 8272, 8668, 9259, 10340, 10835, 15760, 17336, 18518, 20680, 21670, 34672, 37036, 41360, 43340, 46295, 74072, 86680, 92590, 101849, 148144, 173360, 185180, 203698, 370360, 407396, 509245, 740720, 814792, 1018490, 1629584, 2036980, 4073960, 8147920]

約数ペア:

[(1, 8147920), (2, 4073960), (4, 2036980), (5, 1629584), (8, 1018490), (10, 814792), (11, 740720), (16, 509245), (20, 407396), (22, 370360), (40, 203698), (44, 185180), (47, 173360), (55, 148144), (80, 101849), (88, 92590), (94, 86680), (110, 74072), (176, 46295), (188, 43340), (197, 41360), (220, 37036), (235, 34672), (376, 21670), (394, 20680), (440, 18518), (470, 17336), (517, 15760), (752, 10835), (788, 10340), (880, 9259), (940, 8668), (985, 8272), (1034, 7880), (1576, 5170), (1880, 4334), (1970, 4136), (2068, 3940), (2167, 3760), (2585, 3152)]