1277882420

素因数分解:

$2^2\times 5^1\times {\mathrm{63894121}}^1$

素因数の和:63894130

約数の個数: 12

約数和(自身を含む): 2683553124

約数和(自身を除く): 1405670704

約数列:

[1, 2, 4, 5, 10, 20, 63894121, 127788242, 255576484, 319470605, 638941210, 1277882420]

約数ペア:

[(1, 1277882420), (2, 638941210), (4, 319470605), (5, 255576484), (10, 127788242), (20, 63894121)]