19808080385

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{485909}}^1$

素因数の和:486208

約数の個数: 16

約数和(自身を含む): 24629806080

約数和(自身を除く): 4821725695

約数列:

[1, 5, 31, 155, 263, 1315, 8153, 40765, 485909, 2429545, 15063179, 75315895, 127794067, 638970335, 3961616077, 19808080385]

約数ペア:

[(1, 19808080385), (5, 3961616077), (31, 638970335), (155, 127794067), (263, 75315895), (1315, 15063179), (8153, 2429545), (40765, 485909)]