19855855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{4447}}^1$

素因数の和:4518

約数の個数: 16

約数和(自身を含む): 25620480

約数和(自身を除く): 5764625

約数列:

[1, 5, 19, 47, 95, 235, 893, 4447, 4465, 22235, 84493, 209009, 422465, 1045045, 3971171, 19855855]

約数ペア:

[(1, 19855855), (5, 3971171), (19, 1045045), (47, 422465), (95, 209009), (235, 84493), (893, 22235), (4447, 4465)]