12893558420

素因数分解:

$2^2\times 5^1\times {\mathrm{644677921}}^1$

素因数の和:644677930

約数の個数: 12

約数和(自身を含む): 27076472724

約数和(自身を除く): 14182914304

約数列:

[1, 2, 4, 5, 10, 20, 644677921, 1289355842, 2578711684, 3223389605, 6446779210, 12893558420]

約数ペア:

[(1, 12893558420), (2, 6446779210), (4, 3223389605), (5, 2578711684), (10, 1289355842), (20, 644677921)]