20878682

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:482

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15409318

約数列:

[1, 2, 11, 19, 22, 38, 199, 209, 251, 398, 418, 502, 2189, 2761, 3781, 4378, 4769, 5522, 7562, 9538, 41591, 49949, 52459, 83182, 99898, 104918, 549439, 949031, 1098878, 1898062, 10439341, 20878682]

約数ペア:

[(1, 20878682), (2, 10439341), (11, 1898062), (19, 1098878), (22, 949031), (38, 549439), (199, 104918), (209, 99898), (251, 83182), (398, 52459), (418, 49949), (502, 41591), (2189, 9538), (2761, 7562), (3781, 5522), (4378, 4769)]