645481042

素因数分解:

$2^1\times {\mathrm{661}}^1\times {\mathrm{488261}}^1$

素因数の和:488924

約数の個数: 8

約数和(自身を含む): 969688332

約数和(自身を除く): 324207290

約数列:

[1, 2, 661, 1322, 488261, 976522, 322740521, 645481042]

約数ペア:

[(1, 645481042), (2, 322740521), (661, 976522), (1322, 488261)]