19940985

素因数分解:

$3^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{929}}^1$

素因数の和:999

約数の個数: 40

約数和(自身を含む): 36459720

約数和(自身を除く): 16518735

約数列:

[1, 3, 5, 9, 15, 27, 45, 53, 81, 135, 159, 265, 405, 477, 795, 929, 1431, 2385, 2787, 4293, 4645, 7155, 8361, 13935, 21465, 25083, 41805, 49237, 75249, 125415, 147711, 246185, 376245, 443133, 738555, 1329399, 2215665, 3988197, 6646995, 19940985]

約数ペア:

[(1, 19940985), (3, 6646995), (5, 3988197), (9, 2215665), (15, 1329399), (27, 738555), (45, 443133), (53, 376245), (81, 246185), (135, 147711), (159, 125415), (265, 75249), (405, 49237), (477, 41805), (795, 25083), (929, 21465), (1431, 13935), (2385, 8361), (2787, 7155), (4293, 4645)]