19781188

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{17231}}^1$

素因数の和:17283

約数の個数: 24

約数和(自身を含む): 40529664

約数和(自身を除く): 20748476

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 17231, 34462, 68924, 120617, 241234, 482468, 706471, 1412942, 2825884, 4945297, 9890594, 19781188]

約数ペア:

[(1, 19781188), (2, 9890594), (4, 4945297), (7, 2825884), (14, 1412942), (28, 706471), (41, 482468), (82, 241234), (164, 120617), (287, 68924), (574, 34462), (1148, 17231)]