18040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1$

素因数の和:63

約数の個数: 32

約数和(自身を含む): 45360

約数和(自身を除く): 27320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 4510, 9020, 18040]

約数ペア:

[(1, 18040), (2, 9020), (4, 4510), (5, 3608), (8, 2255), (10, 1804), (11, 1640), (20, 902), (22, 820), (40, 451), (41, 440), (44, 410), (55, 328), (82, 220), (88, 205), (110, 164)]