217021640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{493231}}^1$

素因数の和:493253

約数の個数: 32

約数和(自身を含む): 532690560

約数和(自身を除く): 315668920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 493231, 986462, 1972924, 2466155, 3945848, 4932310, 5425541, 9864620, 10851082, 19729240, 21702164, 27127705, 43404328, 54255410, 108510820, 217021640]

約数ペア:

[(1, 217021640), (2, 108510820), (4, 54255410), (5, 43404328), (8, 27127705), (10, 21702164), (11, 19729240), (20, 10851082), (22, 9864620), (40, 5425541), (44, 4932310), (55, 3945848), (88, 2466155), (110, 1972924), (220, 986462), (440, 493231)]