1271218420

素因数分解:

$2^2\times 5^1\times {\mathrm{63560921}}^1$

素因数の和:63560930

約数の個数: 12

約数和(自身を含む): 2669558724

約数和(自身を除く): 1398340304

約数列:

[1, 2, 4, 5, 10, 20, 63560921, 127121842, 254243684, 317804605, 635609210, 1271218420]

約数ペア:

[(1, 1271218420), (2, 635609210), (4, 317804605), (5, 254243684), (10, 127121842), (20, 63560921)]