19142420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{87011}}^1$

素因数の和:87031

約数の個数: 24

約数和(自身を含む): 43854048

約数和(自身を除く): 24711628

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 87011, 174022, 348044, 435055, 870110, 957121, 1740220, 1914242, 3828484, 4785605, 9571210, 19142420]

約数ペア:

[(1, 19142420), (2, 9571210), (4, 4785605), (5, 3828484), (10, 1914242), (11, 1740220), (20, 957121), (22, 870110), (44, 435055), (55, 348044), (110, 174022), (220, 87011)]