20290660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78041}}^1$

素因数の和:78063

約数の個数: 24

約数和(自身を含む): 45888696

約数和(自身を除く): 25598036

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78041, 156082, 312164, 390205, 780410, 1014533, 1560820, 2029066, 4058132, 5072665, 10145330, 20290660]

約数ペア:

[(1, 20290660), (2, 10145330), (4, 5072665), (5, 4058132), (10, 2029066), (13, 1560820), (20, 1014533), (26, 780410), (52, 390205), (65, 312164), (130, 156082), (260, 78041)]