819463280

素因数分解:

$2^4\times 5^1\times {\mathrm{10243291}}^1$

素因数の和:10243304

約数の個数: 20

約数和(自身を含む): 1905252312

約数和(自身を除く): 1085789032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10243291, 20486582, 40973164, 51216455, 81946328, 102432910, 163892656, 204865820, 409731640, 819463280]

約数ペア:

[(1, 819463280), (2, 409731640), (4, 204865820), (5, 163892656), (8, 102432910), (10, 81946328), (16, 51216455), (20, 40973164), (40, 20486582), (80, 10243291)]