20857886

素因数分解:

$2^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{3931}}^1$

素因数の和:4319

約数の個数: 16

約数和(自身を含む): 35859840

約数和(自身を除く): 15001954

約数列:

[1, 2, 7, 14, 379, 758, 2653, 3931, 5306, 7862, 27517, 55034, 1489849, 2979698, 10428943, 20857886]

約数ペア:

[(1, 20857886), (2, 10428943), (7, 2979698), (14, 1489849), (379, 55034), (758, 27517), (2653, 7862), (3931, 5306)]