257525289

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{19373}}^1$

素因数の和:19597

約数の個数: 24

約数和(自身を含む): 427157952

約数和(自身を除く): 169632663

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 1477, 1899, 4431, 13293, 19373, 58119, 135611, 174357, 406833, 1220499, 4087703, 12263109, 28613921, 36789327, 85841763, 257525289]

約数ペア:

[(1, 257525289), (3, 85841763), (7, 36789327), (9, 28613921), (21, 12263109), (63, 4087703), (211, 1220499), (633, 406833), (1477, 174357), (1899, 135611), (4431, 58119), (13293, 19373)]