217987880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:279

約数の個数: 128

約数和(自身を含む): 557383680

約数和(自身を除く): 339395800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 83, 88, 94, 110, 127, 166, 188, 220, 235, 254, 332, 376, 415, 440, 470, 508, 517, 635, 664, 830, 913, 940, 1016, 1034, 1270, 1397, 1660, 1826, 1880, 2068, 2540, 2585, 2794, 3320, 3652, 3901, 4136, 4565, 5080, 5170, 5588, 5969, 6985, 7304, 7802, 9130, 10340, 10541, 11176, 11938, 13970, 15604, 18260, 19505, 20680, 21082, 23876, 27940, 29845, 31208, 36520, 39010, 42164, 42911, 47752, 52705, 55880, 59690, 65659, 78020, 84328, 85822, 105410, 115951, 119380, 131318, 156040, 171644, 210820, 214555, 231902, 238760, 262636, 328295, 343288, 421640, 429110, 463804, 495427, 525272, 579755, 656590, 858220, 927608, 990854, 1159510, 1313180, 1716440, 1981708, 2319020, 2477135, 2626360, 3963416, 4638040, 4954270, 5449697, 9908540, 10899394, 19817080, 21798788, 27248485, 43597576, 54496970, 108993940, 217987880]

約数ペア:

[(1, 217987880), (2, 108993940), (4, 54496970), (5, 43597576), (8, 27248485), (10, 21798788), (11, 19817080), (20, 10899394), (22, 9908540), (40, 5449697), (44, 4954270), (47, 4638040), (55, 3963416), (83, 2626360), (88, 2477135), (94, 2319020), (110, 1981708), (127, 1716440), (166, 1313180), (188, 1159510), (220, 990854), (235, 927608), (254, 858220), (332, 656590), (376, 579755), (415, 525272), (440, 495427), (470, 463804), (508, 429110), (517, 421640), (635, 343288), (664, 328295), (830, 262636), (913, 238760), (940, 231902), (1016, 214555), (1034, 210820), (1270, 171644), (1397, 156040), (1660, 131318), (1826, 119380), (1880, 115951), (2068, 105410), (2540, 85822), (2585, 84328), (2794, 78020), (3320, 65659), (3652, 59690), (3901, 55880), (4136, 52705), (4565, 47752), (5080, 42911), (5170, 42164), (5588, 39010), (5969, 36520), (6985, 31208), (7304, 29845), (7802, 27940), (9130, 23876), (10340, 21082), (10541, 20680), (11176, 19505), (11938, 18260), (13970, 15604)]