19666780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{140477}}^1$

素因数の和:140493

約数の個数: 24

約数和(自身を含む): 47200608

約数和(自身を除く): 27533828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 140477, 280954, 561908, 702385, 983339, 1404770, 1966678, 2809540, 3933356, 4916695, 9833390, 19666780]

約数ペア:

[(1, 19666780), (2, 9833390), (4, 4916695), (5, 3933356), (7, 2809540), (10, 1966678), (14, 1404770), (20, 983339), (28, 702385), (35, 561908), (70, 280954), (140, 140477)]