1277020180

素因数分解:

$2^2\times 5^1\times {\mathrm{63851009}}^1$

素因数の和:63851018

約数の個数: 12

約数和(自身を含む): 2681742420

約数和(自身を除く): 1404722240

約数列:

[1, 2, 4, 5, 10, 20, 63851009, 127702018, 255404036, 319255045, 638510090, 1277020180]

約数ペア:

[(1, 1277020180), (2, 638510090), (4, 319255045), (5, 255404036), (10, 127702018), (20, 63851009)]