18919649

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{7487}}^1$

素因数の和:7532

約数の個数: 12

約数和(自身を含む): 22823424

約数和(自身を除く): 3903775

約数列:

[1, 7, 19, 133, 361, 2527, 7487, 52409, 142253, 995771, 2702807, 18919649]

約数ペア:

[(1, 18919649), (7, 2702807), (19, 995771), (133, 142253), (361, 52409), (2527, 7487)]