638961873

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^2\times {\mathrm{167}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 989549568

約数和(自身を除く): 350587695

約数列:

[1, 3, 11, 23, 33, 69, 71, 167, 213, 253, 501, 759, 781, 1633, 1837, 2343, 3841, 4899, 5041, 5511, 11523, 11857, 15123, 17963, 35571, 42251, 53889, 55451, 115943, 126753, 130427, 166353, 272711, 347829, 391281, 818133, 841847, 1275373, 2525541, 2999821, 3826119, 8999463, 9260317, 19362481, 27780951, 58087443, 212987291, 638961873]

約数ペア:

[(1, 638961873), (3, 212987291), (11, 58087443), (23, 27780951), (33, 19362481), (69, 9260317), (71, 8999463), (167, 3826119), (213, 2999821), (253, 2525541), (501, 1275373), (759, 841847), (781, 818133), (1633, 391281), (1837, 347829), (2343, 272711), (3841, 166353), (4899, 130427), (5041, 126753), (5511, 115943), (11523, 55451), (11857, 53889), (15123, 42251), (17963, 35571)]