20646945

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{787}}^1$

素因数の和:862

約数の個数: 48

約数和(自身を含む): 39828672

約数和(自身を除く): 19181727

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 53, 55, 99, 159, 165, 265, 477, 495, 583, 787, 795, 1749, 2361, 2385, 2915, 3935, 5247, 7083, 8657, 8745, 11805, 25971, 26235, 35415, 41711, 43285, 77913, 125133, 129855, 208555, 375399, 389565, 458821, 625665, 1376463, 1876995, 2294105, 4129389, 6882315, 20646945]

約数ペア:

[(1, 20646945), (3, 6882315), (5, 4129389), (9, 2294105), (11, 1876995), (15, 1376463), (33, 625665), (45, 458821), (53, 389565), (55, 375399), (99, 208555), (159, 129855), (165, 125133), (265, 77913), (477, 43285), (495, 41711), (583, 35415), (787, 26235), (795, 25971), (1749, 11805), (2361, 8745), (2385, 8657), (2915, 7083), (3935, 5247)]