21662137

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{523}}^1$

素因数の和:688

約数の個数: 16

約数和(自身を含む): 25470592

約数和(自身を除く): 3808455

約数列:

[1, 7, 61, 97, 427, 523, 679, 3661, 5917, 31903, 41419, 50731, 223321, 355117, 3094591, 21662137]

約数ペア:

[(1, 21662137), (7, 3094591), (61, 355117), (97, 223321), (427, 50731), (523, 41419), (679, 31903), (3661, 5917)]