19967824

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{29023}}^1$

素因数の和:29074

約数の個数: 20

約数和(自身を含む): 39588736

約数和(自身を除く): 19620912

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 29023, 58046, 116092, 232184, 464368, 1247989, 2495978, 4991956, 9983912, 19967824]

約数ペア:

[(1, 19967824), (2, 9983912), (4, 4991956), (8, 2495978), (16, 1247989), (43, 464368), (86, 232184), (172, 116092), (344, 58046), (688, 29023)]