20189090

素因数分解:

$2^1\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{1993}}^1$

素因数の和:3013

約数の個数: 16

約数和(自身を含む): 36394488

約数和(自身を除く): 16205398

約数列:

[1, 2, 5, 10, 1013, 1993, 2026, 3986, 5065, 9965, 10130, 19930, 2018909, 4037818, 10094545, 20189090]

約数ペア:

[(1, 20189090), (2, 10094545), (5, 4037818), (10, 2018909), (1013, 19930), (1993, 10130), (2026, 9965), (3986, 5065)]