20289256

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{195089}}^1$

素因数の和:195108

約数の個数: 16

約数和(自身を含む): 40968900

約数和(自身を除く): 20679644

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 195089, 390178, 780356, 1560712, 2536157, 5072314, 10144628, 20289256]

約数ペア:

[(1, 20289256), (2, 10144628), (4, 5072314), (8, 2536157), (13, 1560712), (26, 780356), (52, 390178), (104, 195089)]