19918420

素因数分解:

$2^2\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4349}}^1$

素因数の和:4587

約数の個数: 24

約数和(自身を含む): 42021000

約数和(自身を除く): 22102580

約数列:

[1, 2, 4, 5, 10, 20, 229, 458, 916, 1145, 2290, 4349, 4580, 8698, 17396, 21745, 43490, 86980, 995921, 1991842, 3983684, 4979605, 9959210, 19918420]

約数ペア:

[(1, 19918420), (2, 9959210), (4, 4979605), (5, 3983684), (10, 1991842), (20, 995921), (229, 86980), (458, 43490), (916, 21745), (1145, 17396), (2290, 8698), (4349, 4580)]