21964887

素因数分解:

$3^2\times 7^2\times {\mathrm{49807}}^1$

素因数の和:49827

約数の個数: 18

約数和(自身を含む): 36907728

約数和(自身を除く): 14942841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49807, 149421, 348649, 448263, 1045947, 2440543, 3137841, 7321629, 21964887]

約数ペア:

[(1, 21964887), (3, 7321629), (7, 3137841), (9, 2440543), (21, 1045947), (49, 448263), (63, 348649), (147, 149421), (441, 49807)]