18921032

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4231}}^1$

素因数の和:4293

約数の個数: 32

約数和(自身を含む): 39103680

約数和(自身を除く): 20182648

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4231, 4472, 8462, 16924, 33848, 55003, 110006, 181933, 220012, 363866, 440024, 727732, 1455464, 2365129, 4730258, 9460516, 18921032]

約数ペア:

[(1, 18921032), (2, 9460516), (4, 4730258), (8, 2365129), (13, 1455464), (26, 727732), (43, 440024), (52, 363866), (86, 220012), (104, 181933), (172, 110006), (344, 55003), (559, 33848), (1118, 16924), (2236, 8462), (4231, 4472)]