20512201995

素因数分解:

$3^3\times 5^1\times {\mathrm{379}}^1\times {\mathrm{400903}}^1$

素因数の和:401296

約数の個数: 32

約数和(自身を含む): 36562444800

約数和(自身を除く): 16050242805

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 379, 1137, 1895, 3411, 5685, 10233, 17055, 51165, 400903, 1202709, 2004515, 3608127, 6013545, 10824381, 18040635, 54121905, 151942237, 455826711, 759711185, 1367480133, 2279133555, 4102440399, 6837400665, 20512201995]

約数ペア:

[(1, 20512201995), (3, 6837400665), (5, 4102440399), (9, 2279133555), (15, 1367480133), (27, 759711185), (45, 455826711), (135, 151942237), (379, 54121905), (1137, 18040635), (1895, 10824381), (3411, 6013545), (5685, 3608127), (10233, 2004515), (17055, 1202709), (51165, 400903)]