19471420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10939}}^1$

素因数の和:11037

約数の個数: 24

約数和(自身を含む): 41353200

約数和(自身を除く): 21881780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 10939, 21878, 43756, 54695, 109390, 218780, 973571, 1947142, 3894284, 4867855, 9735710, 19471420]

約数ペア:

[(1, 19471420), (2, 9735710), (4, 4867855), (5, 3894284), (10, 1947142), (20, 973571), (89, 218780), (178, 109390), (356, 54695), (445, 43756), (890, 21878), (1780, 10939)]