19770740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89867}}^1$

素因数の和:89887

約数の個数: 24

約数和(自身を含む): 45293472

約数和(自身を除く): 25522732

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89867, 179734, 359468, 449335, 898670, 988537, 1797340, 1977074, 3954148, 4942685, 9885370, 19770740]

約数ペア:

[(1, 19770740), (2, 9885370), (4, 4942685), (5, 3954148), (10, 1977074), (11, 1797340), (20, 988537), (22, 898670), (44, 449335), (55, 359468), (110, 179734), (220, 89867)]