642817234

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{393401}}^1$

素因数の和:393465

約数の個数: 16

約数和(自身を含む): 1038581280

約数和(自身を除く): 395764046

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 393401, 786802, 7474619, 14949238, 16916243, 33832486, 321408617, 642817234]

約数ペア:

[(1, 642817234), (2, 321408617), (19, 33832486), (38, 16916243), (43, 14949238), (86, 7474619), (817, 786802), (1634, 393401)]