19850290

素因数分解:

$2^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4421}}^1$

素因数の和:4877

約数の個数: 16

約数和(自身を含む): 35818200

約数和(自身を除く): 15967910

約数列:

[1, 2, 5, 10, 449, 898, 2245, 4421, 4490, 8842, 22105, 44210, 1985029, 3970058, 9925145, 19850290]

約数ペア:

[(1, 19850290), (2, 9925145), (5, 3970058), (10, 1985029), (449, 44210), (898, 22105), (2245, 8842), (4421, 4490)]