18820780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{85549}}^1$

素因数の和:85569

約数の個数: 24

約数和(自身を含む): 43117200

約数和(自身を除く): 24296420

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 85549, 171098, 342196, 427745, 855490, 941039, 1710980, 1882078, 3764156, 4705195, 9410390, 18820780]

約数ペア:

[(1, 18820780), (2, 9410390), (4, 4705195), (5, 3764156), (10, 1882078), (11, 1710980), (20, 941039), (22, 855490), (44, 427745), (55, 342196), (110, 171098), (220, 85549)]