19248920

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5407}}^1$

素因数の和:5507

約数の個数: 32

約数和(自身を含む): 43804800

約数和(自身を除く): 24555880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5407, 10814, 21628, 27035, 43256, 54070, 108140, 216280, 481223, 962446, 1924892, 2406115, 3849784, 4812230, 9624460, 19248920]

約数ペア:

[(1, 19248920), (2, 9624460), (4, 4812230), (5, 3849784), (8, 2406115), (10, 1924892), (20, 962446), (40, 481223), (89, 216280), (178, 108140), (356, 54070), (445, 43256), (712, 27035), (890, 21628), (1780, 10814), (3560, 5407)]