18549520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:328

約数の個数: 80

約数和(自身を含む): 47729088

約数和(自身を除く): 29179568

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 107, 110, 176, 197, 214, 220, 394, 428, 440, 535, 788, 856, 880, 985, 1070, 1177, 1576, 1712, 1970, 2140, 2167, 2354, 3152, 3940, 4280, 4334, 4708, 5885, 7880, 8560, 8668, 9416, 10835, 11770, 15760, 17336, 18832, 21079, 21670, 23540, 34672, 42158, 43340, 47080, 84316, 86680, 94160, 105395, 168632, 173360, 210790, 231869, 337264, 421580, 463738, 843160, 927476, 1159345, 1686320, 1854952, 2318690, 3709904, 4637380, 9274760, 18549520]

約数ペア:

[(1, 18549520), (2, 9274760), (4, 4637380), (5, 3709904), (8, 2318690), (10, 1854952), (11, 1686320), (16, 1159345), (20, 927476), (22, 843160), (40, 463738), (44, 421580), (55, 337264), (80, 231869), (88, 210790), (107, 173360), (110, 168632), (176, 105395), (197, 94160), (214, 86680), (220, 84316), (394, 47080), (428, 43340), (440, 42158), (535, 34672), (788, 23540), (856, 21670), (880, 21079), (985, 18832), (1070, 17336), (1177, 15760), (1576, 11770), (1712, 10835), (1970, 9416), (2140, 8668), (2167, 8560), (2354, 7880), (3152, 5885), (3940, 4708), (4280, 4334)]