21286616

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{204679}}^1$

素因数の和:204698

約数の個数: 16

約数和(自身を含む): 42982800

約数和(自身を除く): 21696184

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 204679, 409358, 818716, 1637432, 2660827, 5321654, 10643308, 21286616]

約数ペア:

[(1, 21286616), (2, 10643308), (4, 5321654), (8, 2660827), (13, 1637432), (26, 818716), (52, 409358), (104, 204679)]