19688739

素因数分解:

$3^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{887}}^1$

素因数の和:1055

約数の個数: 24

約数和(自身を含む): 30774528

約数和(自身を除く): 11085789

約数列:

[1, 3, 7, 21, 49, 147, 151, 453, 887, 1057, 2661, 3171, 6209, 7399, 18627, 22197, 43463, 130389, 133937, 401811, 937559, 2812677, 6562913, 19688739]

約数ペア:

[(1, 19688739), (3, 6562913), (7, 2812677), (21, 937559), (49, 401811), (147, 133937), (151, 130389), (453, 43463), (887, 22197), (1057, 18627), (2661, 7399), (3171, 6209)]