20889290

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90823}}^1$

素因数の和:90853

約数の個数: 16

約数和(自身を含む): 39235968

約数和(自身を除く): 18346678

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90823, 181646, 454115, 908230, 2088929, 4177858, 10444645, 20889290]

約数ペア:

[(1, 20889290), (2, 10444645), (5, 4177858), (10, 2088929), (23, 908230), (46, 454115), (115, 181646), (230, 90823)]