21164440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{467}}^1$

素因数の和:592

約数の個数: 64

約数和(自身を含む): 52565760

約数和(自身を除く): 31401320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 103, 110, 206, 220, 412, 440, 467, 515, 824, 934, 1030, 1133, 1868, 2060, 2266, 2335, 3736, 4120, 4532, 4670, 5137, 5665, 9064, 9340, 10274, 11330, 18680, 20548, 22660, 25685, 41096, 45320, 48101, 51370, 96202, 102740, 192404, 205480, 240505, 384808, 481010, 529111, 962020, 1058222, 1924040, 2116444, 2645555, 4232888, 5291110, 10582220, 21164440]

約数ペア:

[(1, 21164440), (2, 10582220), (4, 5291110), (5, 4232888), (8, 2645555), (10, 2116444), (11, 1924040), (20, 1058222), (22, 962020), (40, 529111), (44, 481010), (55, 384808), (88, 240505), (103, 205480), (110, 192404), (206, 102740), (220, 96202), (412, 51370), (440, 48101), (467, 45320), (515, 41096), (824, 25685), (934, 22660), (1030, 20548), (1133, 18680), (1868, 11330), (2060, 10274), (2266, 9340), (2335, 9064), (3736, 5665), (4120, 5137), (4532, 4670)]