19308890

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{4721}}^1$

素因数の和:5137

約数の個数: 16

約数和(自身を含む): 34848360

約数和(自身を除く): 15539470

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 4721, 9442, 23605, 47210, 1930889, 3861778, 9654445, 19308890]

約数ペア:

[(1, 19308890), (2, 9654445), (5, 3861778), (10, 1930889), (409, 47210), (818, 23605), (2045, 9442), (4090, 4721)]