2191180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1231}}^1$

素因数の和:1329

約数の個数: 24

約数和(自身を含む): 4656960

約数和(自身を除く): 2465780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1231, 1780, 2462, 4924, 6155, 12310, 24620, 109559, 219118, 438236, 547795, 1095590, 2191180]

約数ペア:

[(1, 2191180), (2, 1095590), (4, 547795), (5, 438236), (10, 219118), (20, 109559), (89, 24620), (178, 12310), (356, 6155), (445, 4924), (890, 2462), (1231, 1780)]