21186738

素因数分解:

$2^1\times 3^3\times {\mathrm{392347}}^1$

素因数の和:392358

約数の個数: 16

約数和(自身を含む): 47081760

約数和(自身を除く): 25895022

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 392347, 784694, 1177041, 2354082, 3531123, 7062246, 10593369, 21186738]

約数ペア:

[(1, 21186738), (2, 10593369), (3, 7062246), (6, 3531123), (9, 2354082), (18, 1177041), (27, 784694), (54, 392347)]