21814360

素因数分解:

$2^3\times 5^1\times {\mathrm{547}}^1\times {\mathrm{997}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 49221360

約数和(自身を除く): 27407000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 547, 997, 1094, 1994, 2188, 2735, 3988, 4376, 4985, 5470, 7976, 9970, 10940, 19940, 21880, 39880, 545359, 1090718, 2181436, 2726795, 4362872, 5453590, 10907180, 21814360]

約数ペア:

[(1, 21814360), (2, 10907180), (4, 5453590), (5, 4362872), (8, 2726795), (10, 2181436), (20, 1090718), (40, 545359), (547, 39880), (997, 21880), (1094, 19940), (1994, 10940), (2188, 9970), (2735, 7976), (3988, 5470), (4376, 4985)]