19940008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{347}}^1\times {\mathrm{653}}^1$

素因数の和:1017

約数の個数: 32

約数和(自身を含む): 40966560

約数和(自身を除く): 21026552

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 347, 653, 694, 1306, 1388, 2612, 2776, 3817, 5224, 7183, 7634, 14366, 15268, 28732, 30536, 57464, 226591, 453182, 906364, 1812728, 2492501, 4985002, 9970004, 19940008]

約数ペア:

[(1, 19940008), (2, 9970004), (4, 4985002), (8, 2492501), (11, 1812728), (22, 906364), (44, 453182), (88, 226591), (347, 57464), (653, 30536), (694, 28732), (1306, 15268), (1388, 14366), (2612, 7634), (2776, 7183), (3817, 5224)]