20986956

素因数分解:

$2^2\times 3^2\times {\mathrm{582971}}^1$

素因数の和:582981

約数の個数: 18

約数和(自身を含む): 53050452

約数和(自身を除く): 32063496

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 582971, 1165942, 1748913, 2331884, 3497826, 5246739, 6995652, 10493478, 20986956]

約数ペア:

[(1, 20986956), (2, 10493478), (3, 6995652), (4, 5246739), (6, 3497826), (9, 2331884), (12, 1748913), (18, 1165942), (36, 582971)]