20263640

素因数分解:

$2^3\times 5^1\times {\mathrm{506591}}^1$

素因数の和:506602

約数の個数: 16

約数和(自身を含む): 45593280

約数和(自身を除く): 25329640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 506591, 1013182, 2026364, 2532955, 4052728, 5065910, 10131820, 20263640]

約数ペア:

[(1, 20263640), (2, 10131820), (4, 5065910), (5, 4052728), (8, 2532955), (10, 2026364), (20, 1013182), (40, 506591)]