18905480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42967}}^1$

素因数の和:42989

約数の個数: 32

約数和(自身を含む): 46405440

約数和(自身を除く): 27499960

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 42967, 85934, 171868, 214835, 343736, 429670, 472637, 859340, 945274, 1718680, 1890548, 2363185, 3781096, 4726370, 9452740, 18905480]

約数ペア:

[(1, 18905480), (2, 9452740), (4, 4726370), (5, 3781096), (8, 2363185), (10, 1890548), (11, 1718680), (20, 945274), (22, 859340), (40, 472637), (44, 429670), (55, 343736), (88, 214835), (110, 171868), (220, 85934), (440, 42967)]