20991492

素因数分解:

$2^2\times 3^2\times {\mathrm{59}}^1\times {\mathrm{9883}}^1$

素因数の和:9952

約数の個数: 36

約数和(自身を含む): 53966640

約数和(自身を除く): 32975148

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 59, 118, 177, 236, 354, 531, 708, 1062, 2124, 9883, 19766, 29649, 39532, 59298, 88947, 118596, 177894, 355788, 583097, 1166194, 1749291, 2332388, 3498582, 5247873, 6997164, 10495746, 20991492]

約数ペア:

[(1, 20991492), (2, 10495746), (3, 6997164), (4, 5247873), (6, 3498582), (9, 2332388), (12, 1749291), (18, 1166194), (36, 583097), (59, 355788), (118, 177894), (177, 118596), (236, 88947), (354, 59298), (531, 39532), (708, 29649), (1062, 19766), (2124, 9883)]