20408709

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1\times {\mathrm{487}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 27835520

約数和(自身を除く): 7426811

約数列:

[1, 3, 61, 183, 229, 487, 687, 1461, 13969, 29707, 41907, 89121, 111523, 334569, 6802903, 20408709]

約数ペア:

[(1, 20408709), (3, 6802903), (61, 334569), (183, 111523), (229, 89121), (487, 41907), (687, 29707), (1461, 13969)]