21538748

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{69931}}^1$

素因数の和:69953

約数の個数: 24

約数和(自身を含む): 46994304

約数和(自身を除く): 25455556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 69931, 139862, 279724, 489517, 769241, 979034, 1538482, 1958068, 3076964, 5384687, 10769374, 21538748]

約数ペア:

[(1, 21538748), (2, 10769374), (4, 5384687), (7, 3076964), (11, 1958068), (14, 1538482), (22, 979034), (28, 769241), (44, 489517), (77, 279724), (154, 139862), (308, 69931)]