21017157

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{16963}}^1$

素因数の和:17032

約数の個数: 16

約数和(自身を含む): 32570880

約数和(自身を除く): 11553723

約数列:

[1, 3, 7, 21, 59, 177, 413, 1239, 16963, 50889, 118741, 356223, 1000817, 3002451, 7005719, 21017157]

約数ペア:

[(1, 21017157), (3, 7005719), (7, 3002451), (21, 1000817), (59, 356223), (177, 118741), (413, 50889), (1239, 16963)]