20753480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{467}}^1$

素因数の和:590

約数の個数: 64

約数和(自身を含む): 51554880

約数和(自身を除く): 30801400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 467, 505, 808, 934, 1010, 1111, 1868, 2020, 2222, 2335, 3736, 4040, 4444, 4670, 5137, 5555, 8888, 9340, 10274, 11110, 18680, 20548, 22220, 25685, 41096, 44440, 47167, 51370, 94334, 102740, 188668, 205480, 235835, 377336, 471670, 518837, 943340, 1037674, 1886680, 2075348, 2594185, 4150696, 5188370, 10376740, 20753480]

約数ペア:

[(1, 20753480), (2, 10376740), (4, 5188370), (5, 4150696), (8, 2594185), (10, 2075348), (11, 1886680), (20, 1037674), (22, 943340), (40, 518837), (44, 471670), (55, 377336), (88, 235835), (101, 205480), (110, 188668), (202, 102740), (220, 94334), (404, 51370), (440, 47167), (467, 44440), (505, 41096), (808, 25685), (934, 22220), (1010, 20548), (1111, 18680), (1868, 11110), (2020, 10274), (2222, 9340), (2335, 8888), (3736, 5555), (4040, 5137), (4444, 4670)]