20856331312

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{68606353}}^1$

素因数の和:68606380

約数の個数: 20

約数和(自身を含む): 42535939480

約数和(自身を除く): 21679608168

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 68606353, 137212706, 274425412, 548850824, 1097701648, 1303520707, 2607041414, 5214082828, 10428165656, 20856331312]

約数ペア:

[(1, 20856331312), (2, 10428165656), (4, 5214082828), (8, 2607041414), (16, 1303520707), (19, 1097701648), (38, 548850824), (76, 274425412), (152, 137212706), (304, 68606353)]