20802637149

素因数分解:

$3^1\times 7^1\times {\mathrm{2551}}^1\times {\mathrm{388319}}^1$

素因数の和:390880

約数の個数: 16

約数和(自身を含む): 31711764480

約数和(自身を除く): 10909127331

約数列:

[1, 3, 7, 21, 2551, 7653, 17857, 53571, 388319, 1164957, 2718233, 8154699, 990601769, 2971805307, 6934212383, 20802637149]

約数ペア:

[(1, 20802637149), (3, 6934212383), (7, 2971805307), (21, 990601769), (2551, 8154699), (7653, 2718233), (17857, 1164957), (53571, 388319)]