256442020

素因数分解:

$2^2\times 5^1\times {\mathrm{12822101}}^1$

素因数の和:12822110

約数の個数: 12

約数和(自身を含む): 538528284

約数和(自身を除く): 282086264

約数列:

[1, 2, 4, 5, 10, 20, 12822101, 25644202, 51288404, 64110505, 128221010, 256442020]

約数ペア:

[(1, 256442020), (2, 128221010), (4, 64110505), (5, 51288404), (10, 25644202), (20, 12822101)]