21206968

素因数分解:

$2^3\times {\mathrm{127}}^1\times {\mathrm{20873}}^1$

素因数の和:21006

約数の個数: 16

約数和(自身を含む): 40078080

約数和(自身を除く): 18871112

約数列:

[1, 2, 4, 8, 127, 254, 508, 1016, 20873, 41746, 83492, 166984, 2650871, 5301742, 10603484, 21206968]

約数ペア:

[(1, 21206968), (2, 10603484), (4, 5301742), (8, 2650871), (127, 166984), (254, 83492), (508, 41746), (1016, 20873)]