19980376

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8353}}^1$

素因数の和:8395

約数の個数: 32

約数和(自身を含む): 42104160

約数和(自身を除く): 22123784

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 8353, 16706, 33412, 66824, 108589, 192119, 217178, 384238, 434356, 768476, 868712, 1536952, 2497547, 4995094, 9990188, 19980376]

約数ペア:

[(1, 19980376), (2, 9990188), (4, 4995094), (8, 2497547), (13, 1536952), (23, 868712), (26, 768476), (46, 434356), (52, 384238), (92, 217178), (104, 192119), (184, 108589), (299, 66824), (598, 33412), (1196, 16706), (2392, 8353)]