21579796

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{4787}}^1$

素因数の和:4828

約数の個数: 36

約数和(自身を含む): 45849888

約数和(自身を除く): 24270092

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 49, 92, 98, 161, 196, 322, 644, 1127, 2254, 4508, 4787, 9574, 19148, 33509, 67018, 110101, 134036, 220202, 234563, 440404, 469126, 770707, 938252, 1541414, 3082828, 5394949, 10789898, 21579796]

約数ペア:

[(1, 21579796), (2, 10789898), (4, 5394949), (7, 3082828), (14, 1541414), (23, 938252), (28, 770707), (46, 469126), (49, 440404), (92, 234563), (98, 220202), (161, 134036), (196, 110101), (322, 67018), (644, 33509), (1127, 19148), (2254, 9574), (4508, 4787)]