19994090

素因数分解:

$2^1\times 5^1\times {\mathrm{431}}^1\times {\mathrm{4639}}^1$

素因数の和:5077

約数の個数: 16

約数和(自身を含む): 36080640

約数和(自身を除く): 16086550

約数列:

[1, 2, 5, 10, 431, 862, 2155, 4310, 4639, 9278, 23195, 46390, 1999409, 3998818, 9997045, 19994090]

約数ペア:

[(1, 19994090), (2, 9997045), (5, 3998818), (10, 1999409), (431, 46390), (862, 23195), (2155, 9278), (4310, 4639)]