20298681

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:583

約数の個数: 40

約数和(自身を含む): 33602184

約数和(自身を除く): 13303503

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 481, 521, 999, 1053, 1443, 1563, 2997, 4329, 4689, 6773, 12987, 14067, 19277, 20319, 38961, 42201, 57831, 60957, 173493, 182871, 250601, 520479, 548613, 751803, 1561437, 2255409, 6766227, 20298681]

約数ペア:

[(1, 20298681), (3, 6766227), (9, 2255409), (13, 1561437), (27, 751803), (37, 548613), (39, 520479), (81, 250601), (111, 182871), (117, 173493), (333, 60957), (351, 57831), (481, 42201), (521, 38961), (999, 20319), (1053, 19277), (1443, 14067), (1563, 12987), (2997, 6773), (4329, 4689)]