20997622

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{2039}}^1$

素因数の和:2331

約数の個数: 16

約数和(自身を含む): 33292800

約数和(自身を除く): 12295178

約数列:

[1, 2, 19, 38, 271, 542, 2039, 4078, 5149, 10298, 38741, 77482, 552569, 1105138, 10498811, 20997622]

約数ペア:

[(1, 20997622), (2, 10498811), (19, 1105138), (38, 552569), (271, 77482), (542, 38741), (2039, 10298), (4078, 5149)]