81519380

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{24407}}^1$

素因数の和:24583

約数の個数: 24

約数和(自身を含む): 172222848

約数和(自身を除く): 90703468

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 24407, 48814, 97628, 122035, 244070, 488140, 4075969, 8151938, 16303876, 20379845, 40759690, 81519380]

約数ペア:

[(1, 81519380), (2, 40759690), (4, 20379845), (5, 16303876), (10, 8151938), (20, 4075969), (167, 488140), (334, 244070), (668, 122035), (835, 97628), (1670, 48814), (3340, 24407)]