20298020

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2609}}^1$

素因数の和:3007

約数の個数: 24

約数和(自身を含む): 42751800

約数和(自身を除く): 22453780

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 2609, 3890, 5218, 7780, 10436, 13045, 26090, 52180, 1014901, 2029802, 4059604, 5074505, 10149010, 20298020]

約数ペア:

[(1, 20298020), (2, 10149010), (4, 5074505), (5, 4059604), (10, 2029802), (20, 1014901), (389, 52180), (778, 26090), (1556, 13045), (1945, 10436), (2609, 7780), (3890, 5218)]