20705886

素因数分解:

$2^1\times 3^2\times {\mathrm{643}}^1\times {\mathrm{1789}}^1$

素因数の和:2440

約数の個数: 24

約数和(自身を含む): 44957640

約数和(自身を除く): 24251754

約数列:

[1, 2, 3, 6, 9, 18, 643, 1286, 1789, 1929, 3578, 3858, 5367, 5787, 10734, 11574, 16101, 32202, 1150327, 2300654, 3450981, 6901962, 10352943, 20705886]

約数ペア:

[(1, 20705886), (2, 10352943), (3, 6901962), (6, 3450981), (9, 2300654), (18, 1150327), (643, 32202), (1286, 16101), (1789, 11574), (1929, 10734), (3578, 5787), (3858, 5367)]