641710984

素因数分解:

$2^3\times {\mathrm{1999}}^1\times {\mathrm{40127}}^1$

素因数の和:42132

約数の個数: 16

約数和(自身を含む): 1203840000

約数和(自身を除く): 562129016

約数列:

[1, 2, 4, 8, 1999, 3998, 7996, 15992, 40127, 80254, 160508, 321016, 80213873, 160427746, 320855492, 641710984]

約数ペア:

[(1, 641710984), (2, 320855492), (4, 160427746), (8, 80213873), (1999, 321016), (3998, 160508), (7996, 80254), (15992, 40127)]