19777340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89897}}^1$

素因数の和:89917

約数の個数: 24

約数和(自身を含む): 45308592

約数和(自身を除く): 25531252

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 89897, 179794, 359588, 449485, 898970, 988867, 1797940, 1977734, 3955468, 4944335, 9888670, 19777340]

約数ペア:

[(1, 19777340), (2, 9888670), (4, 4944335), (5, 3955468), (10, 1977734), (11, 1797940), (20, 988867), (22, 898970), (44, 449485), (55, 359588), (110, 179794), (220, 89897)]