18809635

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{131}}^1$

素因数の和:243

約数の個数: 24

約数和(自身を含む): 25025616

約数和(自身を除く): 6215981

約数列:

[1, 5, 13, 47, 65, 131, 235, 611, 655, 1703, 2209, 3055, 6157, 8515, 11045, 28717, 30785, 80041, 143585, 289379, 400205, 1446895, 3761927, 18809635]

約数ペア:

[(1, 18809635), (5, 3761927), (13, 1446895), (47, 400205), (65, 289379), (131, 143585), (235, 80041), (611, 30785), (655, 28717), (1703, 11045), (2209, 8515), (3055, 6157)]