20817278

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{1093}}^1$

素因数の和:1291

約数の個数: 16

約数和(自身を含む): 31901040

約数和(自身を除く): 11083762

約数列:

[1, 2, 89, 107, 178, 214, 1093, 2186, 9523, 19046, 97277, 116951, 194554, 233902, 10408639, 20817278]

約数ペア:

[(1, 20817278), (2, 10408639), (89, 233902), (107, 194554), (178, 116951), (214, 97277), (1093, 19046), (2186, 9523)]