21293132

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5471}}^1$

素因数の和:5621

約数の個数: 24

約数和(自身を含む): 42900480

約数和(自身を除く): 21607348

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5471, 10942, 21884, 38297, 76594, 153188, 760469, 1520938, 3041876, 5323283, 10646566, 21293132]

約数ペア:

[(1, 21293132), (2, 10646566), (4, 5323283), (7, 3041876), (14, 1520938), (28, 760469), (139, 153188), (278, 76594), (556, 38297), (973, 21884), (1946, 10942), (3892, 5471)]