20970280

素因数分解:

$2^3\times 5^1\times {\mathrm{524257}}^1$

素因数の和:524268

約数の個数: 16

約数和(自身を含む): 47183220

約数和(自身を除く): 26212940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 524257, 1048514, 2097028, 2621285, 4194056, 5242570, 10485140, 20970280]

約数ペア:

[(1, 20970280), (2, 10485140), (4, 5242570), (5, 4194056), (8, 2621285), (10, 2097028), (20, 1048514), (40, 524257)]