820661995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1\times {\mathrm{21503}}^1$

素因数の和:21974

約数の個数: 16

約数和(自身を含む): 1045094400

約数和(自身を除く): 224432405

約数列:

[1, 5, 17, 85, 449, 2245, 7633, 21503, 38165, 107515, 365551, 1827755, 9654847, 48274235, 164132399, 820661995]

約数ペア:

[(1, 820661995), (5, 164132399), (17, 48274235), (85, 9654847), (449, 1827755), (2245, 365551), (7633, 107515), (21503, 38165)]